Docomo (and other) data sim only :cell standby & battery drain - Android Q&A, Help & Troubleshooting

Hi everyone!!
Some time ago there was a discussion about data only sim cards (in Japan). Basically data only SIM doesn't connect to network like normal voice sim so the os boosts radio signal in search for that (non existing) signal. Then you have a huge battery drain and phone gets hotter.
Apparently the fix was some docomo sim patcher module for xposed. The module is removed if you search in xposed but it can be found online. In all discussion I dont see nobody mentioning kitkat, only ics and jb. I saw somewhere that this problem is supposed to be solved in kitkat but its not. In kit kat there is signal bars but cell standby is high and battery drain is huge. Have in mind that this happens exactly the same on various devices ( Im now on OnePlus one).
I installed the module, and it solved the cell standby (it used to be 100% and now is much less) but time on says as long as the actual time on of the device and although battery life is better it still drinks too much battery no matter if on LTE or 3G. Mostly i notice that battery drain is way too huge when cell phone is in stand by.
Did anyone finally got around this problem? Is there some up to date fix? All I found is very outdated, and no clear solution either.
Thanks

I guess the solution is to pay a little bit extra for sms function, that way phone should connect normally to network and I think there shouldn't be no problem. Somebody please confirm if you tested. Thank you.

So turns out that patch did fix part of the problem, but now here is another problem. Patch is a xposed module and as you all know ,xposed doesnt work in Lollipop.
What is the possible workaroud?
Is there any way to change the code so that phone doesnt look for network when sim is inserted?
I get signal bars but it says no service and in battery settings network signal is red (as if signal is terrible all the time while Im actually missing only 1 bar). When I set apn lte sign appears and internet works (along with huge battery drain)

I am currently in Japan and having the same problem on my Nexus 5 and Android 5.0.1. Is anyone having a solution by now?
Thanks, would help a lot if my phone isn´t discharged after half of the day...

Well, nexus 5 and battery are not best friends to begin with. I am also on Nexus 5 currently. The best bet is to activate sms option which is only 100yen more monthly, and that way phone should register to network probably. Only problem is you have to buy sim again (at least in my case with biglobe).
You can also toggle airplane mode every time you dont use internet ,thats what Im doing right now,although wont save that much.
Interesting thing is that I didnt have that problem with HTC's 4.1.2 jelly bean..

SMS chip doesn't help
EjđiSixo said:
Well, nexus 5 and battery are not best friends to begin with. I am also on Nexus 5 currently. The best bet is to activate sms option which is only 100yen more monthly, and that way phone should register to network probably. Only problem is you have to buy sim again (at least in my case with biglobe).
You can also toggle airplane mode every time you dont use internet ,thats what Im doing right now,although wont save that much.
Interesting thing is that I didnt have that problem with HTC's 4.1.2 jelly bean..
Click to expand...
Click to collapse
I have a Nexus 4 (Android 5.0.1) and I bought one chip in BIC Camera with Line support, which means I can receive SMS (no voice). My battery is draining if the mobile network is on. The best thing I can do for now is, like you said, toggle airplane mode when I have a WiFi connection available and carry a power bank if I need to use 3G...

I have a Nexus 6P on Android 6.0.1 and use a data-only SIM card on Docomo's network in Japan (purchased from BIC camera). This issue has not been solved.
Some have claimed that a previous Android update from 4.x has solved the issue, but this is not the case. I've used multiple Android devices in Japan over the past 2 years with these "MVNO" SIM cards and every single one has the issue of battery drain. The iPhone does not have this problem.
Has anyone solved this? There was an Xposed Module fix for this, but that was ages ago and I presume it does not apply to Android 6.x.

Kaix said:
I have a Nexus 6P on Android 6.0.1 and use a data-only SIM card on Docomo's network in Japan (purchased from BIC camera). This issue has not been solved.
Some have claimed that a previous Android update from 4.x has solved the issue, but this is not the case. I've used multiple Android devices in Japan over the past 2 years with these "MVNO" SIM cards and every single one has the issue of battery drain. The iPhone does not have this problem.
Has anyone solved this? There was an Xposed Module fix for this, but that was ages ago and I presume it does not apply to Android 6.x.
Click to expand...
Click to collapse
It was 'fixed' at one point in time and then it broke again.
I made this ticket but I'm not holding my breath
https://code.google.com/p/android/i... Priority Owner Summary Stars Reporter Opened

Any progress on this? I'm in Japan with a data SIM too ....

Yanoflies said:
Any progress on this? I'm in Japan with a data SIM too ....
Click to expand...
Click to collapse
Sorry, I've left Japan a year ago and don't have Nexus anymore too, so can't help much..

Any progress on this?
Has it been fixed in Nougat?

I hope so. Going to Japan again later this year. Was a pain on my LG G4 last year. Got myself a Nexus 6P now with Android 7.1.1.

Pure Nexus ROM 7.1.2, same battery drain...
I have 0sim, which is free up to 500MB.
I can't add SMS option, because it will cost money.
Please, anyone, post some solution on Nougat for data only SIM.
My phone is rooted, but still no Xposed for Nougat. If it was some tool...

Related

[Q] SGS2 3G Hanging

Hi,
I've had my SGS2 now for around 2 months and thought it maybe be a firmware bug, but have recently upgraded to the latest via Kies which is KE4 and still notice from time to time that the my 3G just wont work.
If I try and access anything via 3G for example webpages you just get page cannot be found, but strangely enough what I have noticed the is H symbol will have a Green UP arrow active but nothing ever happens. In order for me to fix it I have to disable 3G via apndriod and then turn it back on again, as soon as this is done the 3G works as normal. Does anyone know of a fix for this?
I'm on the O2 network if that helps but I think its more than likely a bug with the firmware/phone.
Cheers in advance.
Davey
I've noticed it happen once or twice... but I just hold the power button, and then de-activate and then re-activate the connection from the popup menu. Sometimes when it has hung it can take a fair while to kill it after de-activating as well. But its literally only happened 2 or 3 times in the whole time I've had it; I've had catastrophic battery drainage more often which is a lot more annoying.
I've had the same issues on my phone aswell. I just got mine back from the repair shop and the problem still remains. The guys on the repairshop said it worked fine when they had it, but now its the same again. I dont know if it is my network operator who has problems with my phone staying online or what it is. But its damn annoying, I to have to disable / re-enable the 3G connection for it to start to work again.
I've yet to find a fix for this.. I'm on a network called OneCall, in Norway.
Any tips would be great
I had the same problem when I disabled fast dormancy.
Hello. Since about a week ago, I have this problem PERSISTENTLY. My phone is 3 months' old, I bought it new and unbranded from a store in town, and never rooted it. Only thing I did was upgrading the firmware through kies to the latest version available in my contry (KE7 if I'm not wrong). I have adroid version 2.3.3.
Well, I have found no solution to this problem that is absolutely unbearable.
I shall get rid of this phone as soon as I can because I am really annoyed by discovering problems after problems. I never had any iPhone, but I will try buying the iPhone 5 when it comes out. Hopefully it will work better. After all, it can't be so difficult to make a phone better than this one!
By the way:
I have 2 contracts with vodafone, one on this phone and.the other on a Nokia n95 8GB. Tried swapping the sim cards. Reault is that after the swap on the nokia there still are no problems whereas the SGS2 is still hanging on 3G and H.
So it isn't a problem of the operator, neither it is a problem of sim cards (also because they are different, one is 32k and the other is newer, and 128k).
Now, before throwing this absolute crap of a phone out of the window, I'd like to try a factory reset. But the question is: will I have to reinstall feom scatch every single app, after the reset? Is there a way to back up allbthe installed apps and easily reinstall them, without rooting the phone? I absolutely don't want to root the phone because I'm pretty sure I will end up selling it and so I don't want to loose the warranty.
Sent from my GT-I9100 using XDA App
Factory reset will mean you lost all data, everything on the phone that you dont backup.
But that might not fix it, your best bet is to try a newer modem, as its more a modem issue not a rom issue.
Thank you, veyka.
I just seem to habe found the solution! I disabled fast dormancy by dialing *#9900# (there's a hidden menu).
So far it's working great! It appears that my mobile network is not optimised for that protocol, therefore it must be disabled im.order to get proper internet connection.
So... anybody with this problem, try dialing *#9900# and tapping on "Disable fast dormancy" it is a fully reversible action (just in ca se...). Im fact, it cam be re-enabled at any time from the same hidde menu.
POST NOTE: No. This doesn't work. I spoke too soon...
Sent from my GT-I9100 using XDA App
This problem has been around for a while and I read somewhere that Samsung said they were working on a fix for it. I have had the problem from day 1 and it still does occur with Fast Dormancy disabled. I don't know if some of the newer Firmwares have fixed this or not. I am running official UK KF3 Firmware.
In fact, the fast dormancy trick worked only foe a short time. Now I'm back on wifi. What a disaster of a phone.
I talked to my network operator last night. They told me to go to settings->wireless and network->Mobile networks->Network operators and set it to manual, instead of automatic.
After this it seems like the problem wanished, but it might be just for now. Will test for a few days and come back to this!
Hey this is certainly a good suggestion! Maybe when signal is poor the phone starts searching for other networks and drops the connection. Good point indeed. I will make some trials as well.
Cheers

HELP! no signal

Hello
I got my xperia z2 D6503 2 days ago brand new sealed. I inserted my Net10 sim and it worked like 1 day and than I noticed that there was signal issue first I thought it was because of area than I found out it was phones fault since same sim card worked perfectly on my old xperia z and also on xperia z2 Tab and on my brothers galaxy s4. strange thing is it shows low signal only when LTE is on and I can send and receive text messages but I can't make calls. as soon as I turn off LTE it looses signal and no text or call go through.
I tried factory reset, 2 different sim cards, even bought new sim card, numerous restarts and nothing helps. searched web for this issue and nothing at all.
so anyone else had this experienced? any solutions?
thanks
Build: 17.1.A.2.69
baseband: 8974-AAAAANPZQ-00004-07
giozera said:
Hello
I got my xperia z2 D6503 2 days ago brand new sealed. I inserted my Net10 sim and it worked like 1 day and than I noticed that there was signal issue first I thought it was because of area than I found out it was phones fault since same sim card worked perfectly on my old xperia z and also on xperia z2 Tab and on my brothers galaxy s4. strange thing is it shows low signal only when LTE is on and I can send and receive text messages but I can't make calls. as soon as I turn off LTE it looses signal and no text or call go through.
I tried factory reset, 2 different sim cards, even bought new sim card, numerous restarts and nothing helps. searched web for this issue and nothing at all.
so anyone else had this experienced? any solutions?
thanks
Build: 17.1.A.2.69
baseband: 8974-AAAAANPZQ-00004-07
Click to expand...
Click to collapse
Same issue with my z2... only when I hold it a certain way... I'm on Bell mobility in Canada and got the phone a few days ago.
I've been experiencing the same issue ever and I've had my phone over a month, I'm on EE in the uk running the .55 firmware. My phone is currently in repair to fix this problem so I'll get back to see if it can be fixed
Sony has no solution in USA and can't repair so I returned for exchange to seller. I though it was only me so looks like gonna be big issue
giozera said:
Sony has no solution in USA and can't repair so I returned for exchange to seller. I though it was only me so looks like gonna be big issue
Click to expand...
Click to collapse
Hey, so did the exchange solve the problem for you? I am using NET10 as well and while I do get signal on all networks (2G. 3G, etc..) I notice that it isn't as good as almost any other phone I've had. I live in an area that has poor signal and places that I get 1-2 bars on other phones I get 0-1 on this phone, though when I'm in upper town where signal is great I get about the same as others do. I'm just not sure if my phone is defective or this is just how it is. I really don't want to wait to exchange plus the seller seems reluctant to do so..
I had to fix my APN (wireless &networks -> mobile data).
I Google the correct settings for my carrier(ATT/USA), and saved the updates and it worked IMMEDIATELY.
it's been solid since ever since. Note there are differences for the 3g VS LTE versions. Make sure you enter the right settings.
Good luck!
CCDillon said:
Hey, so did the exchange solve the problem for you? I am using NET10 as well and while I do get signal on all networks (2G. 3G, etc..) I notice that it isn't as good as almost any other phone I've had. I live in an area that has poor signal and places that I get 1-2 bars on other phones I get 0-1 on this phone, though when I'm in upper town where signal is great I get about the same as others do. I'm just not sure if my phone is defective or this is just how it is. I really don't want to wait to exchange plus the seller seems reluctant to do so..
Click to expand...
Click to collapse
I got replacement toda so far so good.
yea I noticed that signal is not as strong as it was on my Xperia Z. even lost signal at the places where my Z was solid. hope this could be solved with future software update.
Ken_Burnside said:
I had to fix my APN (wireless &networks -> mobile data).
I Google the correct settings for my carrier(ATT/USA), and saved the updates and it worked IMMEDIATELY.
it's been solid since ever since. Note there are differences for the 3g VS LTE versions. Make sure you enter the right settings.
Good luck!
Click to expand...
Click to collapse
I did entered correct APN's as I mentioned it was working great for almost day and Than suddenly stopped working so if I had entered wrong APN's it wouldn't worked first time I powered it on. plus same sim card worked well on other LTE phone while was not working on my new Z2, so it was not APN issue.
Try rebooting 3-4 times and then wait. This should solve the problem.
Check the baseband version online and on your phone.
There is also a firmware update but you have to cable your phone to a computer and let it install the Sony software on the PC/MAC ... Mine updated yesterday...
Worth a shot if you haven't done so already.
giozera said:
I got replacement toda so far so good.
yea I noticed that signal is not as strong as it was on my Xperia Z. even lost signal at the places where my Z was solid. hope this could be solved with future software update.
Click to expand...
Click to collapse
Thanks man, it seems that's just how the phone is, maybe I can stop worrying so much about that now, especially since this Z2 I have has no defects that are so plentiful on other user's phones.
And like I said, it's not such a big deal when I'm in places with adequate coverage so it's tolerable. I updated to .402 yesterday and there isn't any change with signal but I'm holding out for more updates that can help out with coverage. I'm thinking once the Z2 is released in some way in the US (carrier or Sony store) that there will be an update then that may help us out.
I'm probably the last person to be offering advice in this forum, however, just a couple days ago I noticed I had no data connectivity at all. Calls and texting still worked, but no cellular data. All my APN setting were correct and even though airplane mode was not selected, turning it off and on again got my data connection back. Just something stumbled upon and I have no idea if it applies to anyone elses issue here. Just thought I'd toss it out there in case it helps just one person.
bluheart said:
Try rebooting 3-4 times and then wait. This should solve the problem.
Check the baseband version online and on your phone.
Click to expand...
Click to collapse
Solve which problem? The one i posted in very first post or the weak signal on my replacement? I did more than 5 reboots to solve first proble but nope.
Now this very weak signal worries me it loosed signal at places where my old Z was great. Hope this phone doesn't end up super problematic
Sent from my SGP521
Sony Service will service/replace the set, if needed. So please do check in there.
phone is amazing everything works smooth, but weak signal is getting on my nerves! looses signal very often and data gets really slow because of low signal even when LTE is available. I live in brooklyn ny and my xperia Z didn't have this issue at all. hopefully this could be fixed soon by software update.
Drop down quick settings from home and ensure LTE is ticked on.
Sent from my D6503 using XDA Premium 4 mobile app
augie7107 said:
Drop down quick settings from home and ensure LTE is ticked on.
Sent from my D6503 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
In that case there is only one way to sloved problem
Call sony xperia department let them fix it or replace new one. Don't even think phone can repair itself
Same problem
My sisters got the same problem,
Help line, Tech team no help what so ever !!!
Been on the phone for over 2 weeks !!!
They wont solve the problem what so ever !
One tech team even said "buy a new phone" !! such great customer service !!
They are wanting £150 for it so it can be "fixed"..... also wanting £40 for the month contract despite not having the phone !!!
I understand who you feel... they are no use what so ever and rude...

Internet settings for Life Mobile (EE) in UK

Hello there,
I have been using Tesco Mobile with my Redmi Note 2 for a couple of months now and have had no problem. I decided to switch networks to a VPN called Life Mobile. They use EE's network in the UK. Since putting in the sim card today I have not been able to connect to the mobile network. I am wondering if anyone else on this network with this phone could help? I have called Life Mobile's helpline and all they wanted to do was run me through EE's apn settings. I had already used their app and also searched elsewhere on the web to find a few different APN settings but none of them worked.
One thing I'm wondering about if whether or not the custom ROM/firmware (MUI 7 I believe) that the phone shipped with (bought online from China by the way) is having anything to do with the internet problems. I get the feeling the customer service for Life Mobile were fobbing me off when they said that maybe my phone just isn't compatible with their network. Phone calls and texts work fine by the way.
Does anything think flashing the phone to the standard android ROM that's available would have any affect on the internet settings. I'm no mobile expert, and with the phone not being on general sale in the UK yet as far as I know, I would appreciate your help to get this internet/mobile data settings issues sorted, as I do use my phone for work.
Thanks in advance for comments and help.
I definitely know that the ROM that came with my phone from Gearbest was the worst piece of software that I have ever used in my life... ever. Check your MIUI build number and see if it's something like 5.xx.xx or 7.xx.xx. If it's something more like 77.55.66, then you have a knock-off and it may be eating your battery, performance, and experience (the original ROM Gearbest flashed on my phone had so much bloatware that the antivirus warned me about one of the programs every ten minutes, and heated up significantly on the home screen). If you have an unofficial ROM, try flashing a developer weekly or stable.
Hi all.
Well, would you believe it, I have spent a large part of the day trying to figure this out and finally I've done it. I'm not quite sure how but I've done it. I'll explain briefly to help anyone else who may be facing the same problem. It seems that changing the network preference setting within the sim settings from LTE to 3G did the trick. Life Mobile does not support 4G as far as I'm aware. That's no problem for me as I'm perfectly happy using 3G when necessary. After doing that and fiddling with the network settings, eventually reverting back to the automatic selection of the network as EE and using the APN default settings as given by the sim when it first was entered into the phone, things suddenly start to kick into life and we had INTERNET!
Thanks for your help in resolving this, and happy New Year to everyone.
same problem
Hi mate,
I'm having the same issue now on life mobile, I've checked all the settings are right but still not picking up mobile data. Any suggestions? Constantly restarting it hoping something will be different but nothing so far.
Cheers
bn09gp said:
Hi mate,
I'm having the same issue now on life mobile, I've checked all the settings are right but still not picking up mobile data. Any suggestions? Constantly restarting it hoping something will be different but nothing so far.
Cheers
Click to expand...
Click to collapse
Driving me crazy as well (on a Lenovo K3 Note). Still have the Tesco SIM in there. Was going to port the number on Monday, but might get them to take the damn thing back!
Tried all the suggestions above, but nothing working. Tried both SIM slots with and without the other SIM, but nothing. Grrrrr....
bn09gp said:
Hi mate,
I'm having the same issue now on life mobile, I've checked all the settings are right but still not picking up mobile data. Any suggestions? Constantly restarting it hoping something will be different but nothing so far.
Cheers
Click to expand...
Click to collapse
Well, they sent me a new SIM card and I had all the same problems until I switched on "data roaming" and it now works fine (it didn't do anything with the last SIM though, when I tried it in another phone, I had to have date roaming on in order to even get a regular signal- data still did not work). I have seen transient "R" occurring when the SIM was activated/deactivated so had suspected this as a problem.

Problem connecting to mobile network

Hello
I recently purchased this phone for a family member. We set it up yesterday, and found that the sim card from their old phone that we've inserted isn't capable of allowing the phone to make/receive texts/calls. It just says something along the lines of "Can't connect to mobile network", despite showing signal bars. When I checked the connectivity bands against the mobile network's, it appeared that the phone should at least support 2G & 3G. I'm in the UK and haven't modified the ROM.
Has anyone had this issue before, and does anyone know of a fix? I've heard that some of the newer official ROMs are better for connectivity, but I don't want to flash the phone and void its warranty if the fault lies with the phone.
Many thanks
Luke
Heyyo, hmm can you please provide more information?
Link to the exact product purchased
What country and network is being used?
Does your device say x820, x821, x822 or x829 on the back of it? If not does it say what it is in the settings > about phone menu?
Can you please specify which version of EUI ROM it is running? Should be in Settings > About Phone.
As for upgrading EUI ROM versions? That will not void warranty as long as you don't have the x829 with EUI ROM 5.8.016s.... which is what I had and x829 with 5.8.016s is garbage. So many darn problems with it and has software updates disabled even via recovery update.zip... I didn't stay on it long since LineageOS 13.0 at the time officially came to the x2 heh
ThE_MarD said:
Heyyo, hmm can you please provide more information?
Link to the exact product purchased
What country and network is being used?
Does your device say x820, x821, x822 or x829 on the back of it? If not does it say what it is in the settings > about phone menu?
Can you please specify which version of EUI ROM it is running? Should be in Settings > About Phone.
As for upgrading EUI ROM versions? That will not void warranty as long as you don't have the x829 with EUI ROM 5.8.016s.... which is what I had and x829 with 5.8.016s is garbage. So many darn problems with it and has software updates disabled even via recovery update.zip... I didn't stay on it long since LineageOS 13.0 at the time officially came to the x2 heh
Click to expand...
Click to collapse
Thanks for your reply
This is where I ordered it from: LeTV LeEco Le Max 2 X820 5.7 inch 4GB RAM 32GB ROM Snapdragon 820 Quad core 4G Smartphone
I live in the UK and the phone's using a Tesco Mobile SIM
The device is the X820
I don't have the phone with me right now, but I believe the EUI is 18s
I wasn't aware upgrading the ROM version didn't affect the warranty, that's nice to know
Hallo,
I believe I might have the same problem with the mobile network. In my case, I am quite certain that the battery is the problem. I got the phone some weeks ago, but I assume it was laying around for quite some time, which might be not very beneficial for the battery? Anyway, the voltage should be 4.4 V after loading and as long as the voltage stays above about 4 V, I have good data connection. But after a while, the voltage drops below 4 V and I do not have any connection anymore, despite showing all signal bars! Is it possible, that you see a similar behavior with your phone? If you load it on a charger, does your data work?
Peter_Kroetz said:
Hallo,
I believe I might have the same problem with the mobile network. In my case, I am quite certain that the battery is the problem. I got the phone some weeks ago, but I assume it was laying around for quite some time, which might be not very beneficial for the battery? Anyway, the voltage should be 4.4 V after loading and as long as the voltage stays above about 4 V, I have good data connection. But after a while, the voltage drops below 4 V and I do not have any connection anymore, despite showing all signal bars! Is it possible, that you see a similar behavior with your phone? If you load it on a charger, does your data work?
Click to expand...
Click to collapse
I personally do not experience this but I'm 100% sure that the voltage from the battery should stay around 4V. If this happens try turning on the battery saver and dimmer your screen so you can spread the battery load. Maybe it will work idk.
LameMonster82 said:
I personally do not experience this but I'm 100% sure that the voltage from the battery should stay around 4V. If this happens try turning on the battery saver and dimmer your screen so you can spread the battery load. Maybe it will work idk.
Click to expand...
Click to collapse
You are probably right in saying that the voltage should stay around 4 V. This is probably the case for new or at least well aged batteries. However, that seems not to be the case of my battery. According to the App that reads out the voltage, it sometimes drops to values as low as 3.6 V. Sometimes, the voltage recovers a bit, but typically, not enough to enable data connection, for which I believe to need at least around 4 V to work (reliably!).
Peter_Kroetz said:
Hallo,
I believe I might have the same problem with the mobile network. In my case, I am quite certain that the battery is the problem. I got the phone some weeks ago, but I assume it was laying around for quite some time, which might be not very beneficial for the battery? Anyway, the voltage should be 4.4 V after loading and as long as the voltage stays above about 4 V, I have good data connection. But after a while, the voltage drops below 4 V and I do not have any connection anymore, despite showing all signal bars! Is it possible, that you see a similar behavior with your phone? If you load it on a charger, does your data work?
Click to expand...
Click to collapse
Thanks for replying, and sorry for my late reply.
I've tried making calls with the battery at full charge, but I get the same result. It's really peculiar...
Luke25361 said:
Thanks for replying, and sorry for my late reply.
I've tried making calls with the battery at full charge, but I get the same result. It's really peculiar...
Click to expand...
Click to collapse
I purchased a X820 from China (TomTop.com) and the junk had an EXTREMELY LOW signal.I NEVER received network signal at home.I have to go near a cell tower to get signal,as soon i drive away from the tower (around 5 blocks)i lost signal and could not make or receive calls..Remember that the company LeEco went out of business and the phones we buy today are NOT made by LeEco but are made by many private factories in China and in reality are cheap clones.I send the junk back and purchased a X829.Now i have very good signal and connection never dropsJust return your phone is defective..Here is a video i had to send to tomtop.com in order to get a refund.
https://www.youtube.com/watch?v=NIOky1pjXKw&t=496s
Peter_Kroetz said:
Hallo,
I believe I might have the same problem with the mobile network. In my case, I am quite certain that the battery is the problem. I got the phone some weeks ago, but I assume it was laying around for quite some time, which might be not very beneficial for the battery? Anyway, the voltage should be 4.4 V after loading and as long as the voltage stays above about 4 V, I have good data connection. But after a while, the voltage drops below 4 V and I do not have any connection anymore, despite showing all signal bars! Is it possible, that you see a similar behavior with your phone? If you load it on a charger, does your data work?
Click to expand...
Click to collapse
I have exactly the same problem when the phone's battery level goes around 70% (~4v).
i.e. when battery drops below 70%, the network signal shows LTE with around 3 bars but there's no network connectivity and can't make/receive phone call. But as soon as I plug in the charger, everything works perfectly! This happens on all ROMs.
I wish there is a solution for this.
same problem for me .....
Today ,
NO WAY to have working Network mobile on a Leeco LE 2 x526 with last stock rom 28s installed on it. NOW i can call on 3G but no voice ,,,,, but i can't be called. .....after restart with / without APN / searchable 3G/4G network Digi.Mobile ...signal is lost and is cost me allot of time and energy . i even lost any hope .....(coul be a hardware problem ?)
Operation made until now
1.install 3 stock roms 19 , 21 and 28
2.install another 6 custom roms 6,7,8.1(miui , havoc, lin14.1 , 15.1, aosp extended ,Bootleggers. RR , Cr ,Small_EUI ,purenexus,cuoco )
3.reset SIM 1+2
4.sparse india image
5.write lost IMEI
6.write new baseband with DFS
7.flash modems firmware (MPSS (56347 , 61295 , 66782 and 68083))
8.try other Carrier SIMS ..... same problem
9.check any carrier server service ...nope
etc (rewrite a qcn file . different APN config , twrp 3.0.2.0 ydss )
I have real problems .....i need help (maybe someone have same problem or has read more infos from so many forums )
The same problem.
Only one person with name AGATSU83 something like this find the solution , and the solution never post it.
He help him LAZYE.
BUT I NOT UNDERSTAND he give us one site in russia and he told us that he find the solution.
I READ AND READ AND READ .........
BUT NOTHING.....
I BRICK MY PHONE 20 TIMES AND NOTHING.
MAYBE ONE DAY I FOUND THE SOLUTION AND I POST IT.
With a new battery we Can solve the problem? Anyone try it?
Luke25361 said:
Hello
I recently purchased this phone for a family member. We set it up yesterday, and found that the sim card from their old phone that we've inserted isn't capable of allowing the phone to make/receive texts/calls. It just says something along the lines of "Can't connect to mobile network", despite showing signal bars. When I checked the connectivity bands against the mobile network's, it appeared that the phone should at least support 2G & 3G. I'm in the UK and haven't modified the ROM.
Has anyone had this issue before, and does anyone know of a fix? I've heard that some of the newer official ROMs are better for connectivity, but I don't want to flash the phone and void its warranty if the fault lies with the phone.
Many thanks
Luke
Click to expand...
Click to collapse
I believe your phone is a X829. Someone installed the X820 firmware to sell it easier. It doesn't have Band 20 for 4G. Tesco mobile is working on O2 network and they're using Band 20 for 4G network. Despite that it should work on 3G. In my opinion you should install a custom ROM and check things there...
gagas1 said:
I believe your phone is a X829. Someone installed the X820 firmware to sell it easier. It doesn't have Band 20 for 4G. Tesco mobile is working on O2 network and they're using Band 20 for 4G network. Despite that it should work on 3G. In my opinion you should install a custom ROM and check things there...
Click to expand...
Click to collapse
Ended up just being too frustrating, so we returned it for a refund & bought a different phone instead...
It's a shame, aside from that one issue it seemed to be a great phone, especially for the price
Luke25361 said:
Ended up just being too frustrating, so we returned it for a refund & bought a different phone instead...
It's a shame, aside from that one issue it seemed to be a great phone, especially for the price
Click to expand...
Click to collapse
I made the mistake and only got a partial refund.. Didn't know it had the focus issue... At least I got nearly half the money back. Network is working fine as I'm on Three..
Got a new Le X526. Always telling me server erroranytime I try to browse on anything but I have full network

Question 61.2.A.0.418, XQ-BC52 signal problems

Hi, I am new to Sony family and bought used III which mightve been a Mistake.
I never see the signal having all bars full. It also reports values around 100dbm.
I have not been making calls really but I can see the reception is worse than with my old Xiaomi 9, same for 4g. Sometimes it drops and only restart fixes it.
Running dualsim, different carriers. Did network config restarts etc.
Lets assume it is sw problem. Could it be bad non-eu stock rom? How do I check?
I might immediatelly go with custom rom, maybe on android 12 just to see if it works better. Any suggestions? I just dont think factory reset or flashing stock is gonna fix it easily and I am open to experiments as long as the system and mainly signal reception is stable because next stop is trashbin really. The phone is overall great, I just did not expect phones having such problems nowadays.
I've seen the same, especially if I go underground for a few minutes - the phone can't reconnect unless I restart it or switch on and off the airplane mode.
But apart from that I have a pretty stable connection, no matter what the bars show.
My uneducated guess is power savings affect the signal strenght.
Never had problems during calls, no matter if driving or stationary
MorkoCZ said:
Hi, I am new to Sony family and bought used III which mightve been a Mistake.
I never see the signal having all bars full. It also reports values around 100dbm.
I have not been making calls really but I can see the reception is worse than with my old Xiaomi 9, same for 4g. Sometimes it drops and only restart fixes it.
Running dualsim, different carriers. Did network config restarts etc.
Lets assume it is sw problem. Could it be bad non-eu stock rom? How do I check?
I might immediatelly go with custom rom, maybe on android 12 just to see if it works better. Any suggestions? I just dont think factory reset or flashing stock is gonna fix it easily and I am open to experiments as long as the system and mainly signal reception is stable because next stop is trashbin really. The phone is overall great, I just did not expect phones having such problems nowadays.
Click to expand...
Click to collapse
As A current Metro by T-mobile sales rep, and self proclaimed cell phone guru, some carriers require a phone to be registered on your account for it to fully work, even if the phone on paper has all the supported bands of said carrier. so this could be the problem, and if it's a software problem you can simply reinstall the correct firmware for your region and device and see if that fixes the issue, you could also try a different region but same device model number...
MorkoCZ said:
Hi, I am new to Sony family and bought used III which mightve been a Mistake.
I never see the signal having all bars full. It also reports values around 100dbm.
I have not been making calls really but I can see the reception is worse than with my old Xiaomi 9, same for 4g. Sometimes it drops and only restart fixes it.
Running dualsim, different carriers. Did network config restarts etc.
Lets assume it is sw problem. Could it be bad non-eu stock rom? How do I check?
I might immediatelly go with custom rom, maybe on android 12 just to see if it works better. Any suggestions? I just dont think factory reset or flashing stock is gonna fix it easily and I am open to experiments as long as the system and mainly signal reception is stable because next stop is trashbin really. The phone is overall great, I just did not expect phones having such problems nowadays.
Click to expand...
Click to collapse
I have the same problem as well
unicastbg said:
I've seen the same, especially if I go underground for a few minutes - the phone can't reconnect unless I restart it or switch on and off the airplane mode.
But apart from that I have a pretty stable connection, no matter what the bars show.
My uneducated guess is power savings affect the signal strenght.
Never had problems during calls, no matter if driving or stationary
Click to expand...
Click to collapse
I have not really tested it much in such environment like underground. The signal mostly stays ok, not full at all but the connection works tho. I had only like 2-3 restarts/week due to connection reporting only EDGE available (still I couldnt browse anything) and both sim signals showed a problem (exlamation mark), I think it could have been caused by worse reception conditions and it eventually stopped working at all.
Ainz_Ooal_Gown said:
As A current Metro by T-mobile sales rep, and self proclaimed cell phone guru, some carriers require a phone to be registered on your account for it to fully work, even if the phone on paper has all the supported bands of said carrier. so this could be the problem, and if it's a software problem you can simply reinstall the correct firmware for your region and device and see if that fixes the issue, you could also try a different region but same device model number...
Click to expand...
Click to collapse
I dont see registration being a requirement here in EU. These are prepaid simcards, no binding to a device, no contract and such.
I dont know if its software problem. After little bit of Googling I came to a conclusion that Sony does indeed have problem with signal reception no matter what is the cause. To me it seems it could be SW related. Question is if flashing stock rom is the way to go or maybe using a custom rom as daily driver?
DrDrag0n said:
I have the same problem as well
Click to expand...
Click to collapse
What os/rom do you have? Have you had any success on making the reception better, more stable? Did custom rom help with that anyhow?
MorkoCZ said:
I don't see registration being a requirement here in EU. These are prepaid simcards, no binding to a device, no contract and such.
I don't know if its software problem. After little bit of Googling I came to a conclusion that Sony does indeed have problem with signal reception no matter what is the cause. To me it seems it could be SW related. Question is if flashing stock rom is the way to go or maybe using a custom rom as daily driver?
Click to expand...
Click to collapse
In the states Metro by T-Mobile is a prepaid company that uses T-Mobile's network, but they specifically require your current device to be on your account to make sure they can give you the correct info on why your phone isn't working correctly. And some times to send the correct configuration file to your device. But in your specific case i would say go the firmware route and see if that fixes it before calling the carrier to see if there's a config file or something similar they need to send.
Ainz_Ooal_Gown said:
In the states Metro by T-Mobile is a prepaid company that uses T-Mobile's network, but they specifically require your current device to be on your account to make sure they can give you the correct info on why your phone isn't working correctly. And some times to send the correct configuration file to your device. But in your specific case i would say go the firmware route and see if that fixes it before calling the carrier to see if there's a config file or something similar they need to send.
Click to expand...
Click to collapse
Thanks for the explanation. I chose the FW route, testing AlphaDroid as of now. So far so good. Reception already looks better so I will stick to this rom for now and see how it performs.
MorkoCZ said:
Thanks for the explanation. I chose the FW route, testing AlphaDroid as of now. So far so good. Reception already looks better so I will stick to this rom for now and see how it performs.
Click to expand...
Click to collapse
Just a tip, you might wanna force 4G even on custom ROMs, I am running same config as you double sim and diff carriers but i get better result by forcing LTE Only on my main data SIM.
Sakuu said:
Just a tip, you might wanna force 4G even on custom ROMs, I am running same config as you double sim and diff carriers but i get better result by forcing LTE Only on my main data SIM.
Click to expand...
Click to collapse
Got it, thanks for the tip.
MorkoCZ said:
Got it, thanks for the tip.
Click to expand...
Click to collapse
I have a quick update for you regarding my devices connectivity problems
I reflashed the latest global firmware, this overrides the modem 5g configs that you find on all of the 5g enabling guides.
immediately my reception AND my phone switching between 3G, 4g 4g+ etc was better. Im not saying im magically getting full bars, but its improved substantially on top of switching between networks when travelling etc is instantly now. Instead of me having to enable flight mode to reset my network every time.
i will try flash a custom rom and see if the reception stays fine
only had problems after trying to enable 5g and follow the guides.
edit: spelling
DrDrag0n said:
I have a quick update for you regarding my devices connectivity problems
I reflashed the latest global firmware, this overrides the modem 5g configs that you find on all of the 5g enabling guides.
immediately my reception AND my phone switching between 3G, 4g 4g+ etc was better. Im not saying im magically getting full bars, but its improved substantially on top of switching between networks when travelling etc is instantly now. Instead of me having to enable flight mode to reset my network every time.
i will try flash a custom rom and see if the reception stays fine
only had problems after trying to enable 5g and follow the guides.
edit: spelling
Click to expand...
Click to collapse
Cool, thanks for the info. What is the version of that global fw?
I had only one network disconnect on AlphaDroid but it managed to fix itself within minutes. Still the display seems bit irresponsive to touches at times, baterry drain is not the best and also call quality does not seem to be the best. So I am considering switching to global or maybe different custom. Ofc it could be just my device.
MorkoCZ said:
Cool, thanks for the info. What is the version of that global fw?
I had only one network disconnect on AlphaDroid but it managed to fix itself within minutes. Still the display seems bit irresponsive to touches at times, baterry drain is not the best and also call quality does not seem to be the best. So I am considering switching to global or maybe different custom. Ofc it could be just my device.
Click to expand...
Click to collapse
You should start using 120Hz if it feels slow (go into QS settings and get the refresh rate toggle from there), also enable High polling rate from Settings > Display for better responsiveness, also if you're rooted/using Shizuku you should try https://github.com/kyujin-cho/pixel-volte-patch/releases it may unlock some SIM options that may improve your call quality.
MorkoCZ said:
Cool, thanks for the info. What is the version of that global fw?
I had only one network disconnect on AlphaDroid but it managed to fix itself within minutes. Still the display seems bit irresponsive to touches at times, baterry drain is not the best and also call quality does not seem to be the best. So I am considering switching to global or maybe different custom. Ofc it could be just my device.
Click to expand...
Click to collapse
6.1.2.A.0.447 was what I upgraded too
Honestly, I don’t have a single practical use case for my phone where i need 5g enabled, so it’s really not a deal breaker for me to not have that enabled. 4g+ is still pretty quick especially for my use case. If you want volte & vowifi I recommend magisk + zygisk so you can use banking apps. Works well for me and call quality is fantastic
edit: I think I should note i did a full clean flash, flashing all and wiping all data on the phone. It’s been a few days and signal noticeably better.
edit 2: spelling (damn autocorrect)

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