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I was just wondering if anyone has had trouble switching from 2G-to-3G and back? I'm on Orange and once I'm on 2G it won't budge to 3G or H.
I know the signal is there as when I force the phone into WCDMA only mode it picks up 3G but if that's not available it's obviously not able to switch back down.
Update: Okay, I've done both a soft and hard reset on the phone, switched it to WCDMA and back to Auto several times, pulled the battery out to do a few cold reboots, selected 'Orange' as my carrier manually and I'm STILL not picking up 3G after I've gone down to 2G. I don't really want to flash my phone via Odin as there's no guarantee it will work and I don't want to lose updates via Kies.
Any idea that to do?
Update 2: Just re-flashed using Odin as per the guide and it still doesn't work.
I really don't know what to do now
Update 3: After all of that it looks like it was bloody Orange's fault! There is a fault with the 3G in Bristol which is forcing people to use WCDMA only for now. Hopefully it'll all be fixed by tomorrow and I nabbed a fiver off 'em.
I Have Asked My Frnd About your problem! my frnd hasnt yet faced any problem !
There are extensive threads in this forum regarding 2g/3g switiching issues or connectivity issues..try and search it, maybe yours is having the same problem.
Sent from my GT-I9100 using Tapatalk
Also had this problem once.. A reflash fixed it
Skyline92 said:
Also had this problem once.. A reflash fixed it
Click to expand...
Click to collapse
Oh not a-bloody-gain! They've already replaced my phone for another one and now I have to reflash?! I'm getting a little sick of this phone (or rather its software) now.
Sent from my GT-I9100 using Tapatalk
Okay, I've done both a soft and hard reset on the phone, switched it to WCDMA and back to Auto several times, pulled the battery out to do a few cold reboots, selected 'Orange' as my carrier manually and I'm STILL not picking up 3G after I've gone down to 2G. I don't really want to flash my phone via Odin as there's no guarantee it will work and I don't want to lose updates via Kies.
Any idea that to do?
Just re-flashed using Odin as per the guide and it still doesn't work.
I really don't know what to do now
I've the same problem phone won't automatically switch to 3g unless i change it to WCDMA only. My last phone a i8910 would automatically switch to 3g for internet access if available the s2 doesn't......
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
I have a weird issue with the phone- I have not decided yet if its problem with hardware or software.
At the first step, without change nothing, Suddenly a sharp drop at signal strength began. few days after, my phone stop connect to network at all. In the "operator select" screen, my operator appear but I get error "selected network unavailable".
I tried factory reset without succes. The only thing that worked was sbf to stock- but the signal still low and again, after few days, the connection lost.
I'm using gsm in israel- Already tried many rom's, so can't use warranty.
Maybe there something I can try before I give up?
Do you have better signal with some other phone?
Try another simcard.
Did you flash any radio as you wanted to do some days ago? Not all the SBFs change your radio, and maybe a bad radio is installed on your phone.
בבקשה ממך אל תענה לי בשבת. כניסת שבת בשבע ודקה ויציאת שבת בשמונה.
I asked about the other radio because this problem, but I didn't got a sure answer so I left the idea. I tried other sim but the problem didn't gone. And others phones works well at same place where the Photon doesn't. I ordered new sim from different operator- I will report after.
In case I want flash radio without full sbf, is it possible? Can I save my data without all the backups methods?
Sent from my MB855 using xda app-developers app
You can try KKDI radio here.
There are also 2 radios listed here, but ask someone with experience (like peetr_) before you try one of them. If you flash one, make sure it's the one for your build.
שבוע טוב!
Hello all,
I do have the following problem which is not new and mentioned in other threads but there is no solution and the threads are quiet old - so I hope it is OK to start a new one:
My LeMax2 is constantly dropping the network signal and the signal is in general very weak (I can only get calls outside, Internet is working irregular "sometimes", outside only. After arrival signal was fine. No difference. Flashed a couple of different custom roms, still fine. Ended up using SmallEUI. After a while (maybe two weeks) signal dropping began. What I tried so far:
- Flashed alternate modem file from SmallEUI, no difference.
- Switched rom back to india20s. Problem stayed the same. -
- Switched to LOS13 (which is still running).
- Entered *#*#4636#*#* switched and set GSM/UMTS band to automatic. Problem got worse.
- flashed various modem files, no difference
- renewed APN settings. No difference.
- Found about 4 threats regarding this problem, can not find a solution. This is exactly my problem: https://forum.xda-developers.com/le-max-2/help/mobile-network-problems-le-max-2-6gb-t3507500
Help? Please? What can I do now?
TOM
Nothing? None? Any idea? A little desperate here tbh...
ToeOfMoe said:
Nothing? None? Any idea? A little desperate here tbh...
Click to expand...
Click to collapse
Have you looked into your carrier? Maybe it's not a device problem..... Try a signal app to see if your connecting to the right bands, getting a good enough signal ....
Have you tried a factory reset?
When I was with T-Mobile they cut service in my area without letting customers know, I ended up buying a signal amplifier for my house to finish out my contract.
Supertacomonkeyexplosion said:
Have you looked into your carrier? Maybe it's not a device problem..... Try a signal app to see if your connecting to the right bands, getting a good enough signal ....
Have you tried a factory reset?
When I was with T-Mobile they cut service in my area without letting customers know, I ended up buying a signal amplifier for my house to finish out my contract.
Click to expand...
Click to collapse
Hey,
thank you for your reply. I put the SIM card into another phone and it worked like a charm. So I think it is not the carrier. Rechecked the APN settings also. Regarding the LTE band I am not sure. Most of the time I only get a H+ connection so no LTE band at all. Thing is: The connection was really good with this phone in the beginning.
Factory reset: Yes, and even more (flashed 6 different roms I think and various modems)
Best,
TOM
x829 no signal
i lived in ireland i have x829 from banggood i don't have networking signal strange when i when battery is 0% turn off phone after Charge the battery signal come back for few minutes after again disappear
I have the same problem. I am living in India, and the signal drop is very frequent.
Earlier i only used to get H+, but from few days i get the LTE band but the signal fluctuates almost every second and very unstable - especially the data. The whole mobile network keeps dropping also frequently. Been a pain in the but*
Using RR v5.8 official
This thing solved the LTE stability problem for me:
Type *#*#4636#*#* on the dialer
select phone info
Click the menu on top right on action bar
Select radio band and select band 43
I get decent speeds with some sudden boosts from time to time. PS I am using Airtel in India.
I have the same problem. I am living in sri lanka, and the signal drop is very frequency The whole mobile network keeps dropping also frequently. Been a pain in the but*
i wish to get updates on this problem, cause this is a pain. tried every method mentioned. tried different new roms (rr, LOS, Eui, stock 26s and 21s roms)
Maybe someone has solutions?
joey86 said:
I have the same problem. I am living in India, and the signal drop is very frequent.
Earlier i only used to get H+, but from few days i get the LTE band but the signal fluctuates almost every second and very unstable - especially the data. The whole mobile network keeps dropping also frequently. Been a pain in the but*
Using RR v5.8 official
Click to expand...
Click to collapse
Hey, did you have success in resolving the issue?
I had problems too with my le s3 x626, it didn't recognize the sim card anymore, froze, and had to force reboot. Luckily, it was a battery issue. For some reason when the phone goes under 10%, it does that. Easily solved upon charging (happened more than once).
Same issue in the philippines
Heyyo, I'd recommend looking into AEX as @shivatejapeddi recently made a bunch of changes for VoLTE and carrier settings that might help.
Otherwise? It could be your carrier might need further apn and carrier configuration changes in order to work at least on custom ROMs.
Another thing to try? Replacing your /system/etc/apns-conf.xml with this one from the Pixel 2 XL. Download it > reboot to TWRP > mount system > make a copy of that /system/etc/apns-conf.xml somewhere as a backup > replace the /system/etc/apns-conf.xml with the one downloaded > reboot to system > reset apn configuration to defaults to force ROM to reload apns-conf.xml
https://drive.google.com/open?id=1Fa-icWihAwcF0dzkbuSU3p5IKig9b6H_
---------- Post added at 09:52 PM ---------- Previous post was at 09:50 PM ----------
ongkal said:
Same issue in the philippines
Click to expand...
Click to collapse
magandang umaga! I'm mestizo and my wife is a Filipina, thus my son is second generation mestizo hehe. What carrier you with? I can try and look into it but no guarantees I can fix it.
Please try the above apns-conf.xml to see if that works
Has anyone found a solution for this problem? I think I have tried every rom and every medem file but no luck...The one thath works best for me is EUI 30s from Crisbal, but still i some times lose the networksignal from time to time
I hae let phone here I CANADA. same prob. Phone ..drops service every 5-10 mins. Carrier is not the problem. As.ive tried many
same problem
leeco le 2 x526 : signal if is starting , after i enter inside building ...it drops instant .... try different stock roms . version .and custom roms (now i am on RR 6.0 - good for camera ) .....baseband of my carrier are recognise , 5 diff. modem firmware .... nothing .... any sugestion is worth trying ..... lets find the solution together .
Ok this is super weird but the Leeco Le Max pro I used had the same issue. BUT. When I'd switch on the hotspot, and let someone connect to my Leeco, they get unrestricted LTE speeds. I cannot use my phone data plan but others can using my wifi So. I don't know exactly what's the issue. All those with this issue do check their hotspot capabilities. Thank you.
dllungu said:
leeco le 2 x526 : signal if is starting , after i enter inside building ...it drops instant .... try different stock roms . version .and custom roms (now i am on RR 6.0 - good for camera ) .....baseband of my carrier are recognise , 5 diff. modem firmware .... nothing .... any sugestion is worth trying ..... lets find the solution together .
Click to expand...
Click to collapse
same problem
tried everything, the last one to do for me is REWRITE IMEI on the phone, i noted a strange IMEI=0 or some difficult in reading it (x526 from myefox.it)
Dialing *#*#4636#*#*
Hi devrookie,
I did it as you mentioned in your comment above...didnt worked
Selected radio band...there is no option of 43 infact there is nothing to select...
anyone got this resolved guys? i just bought two leeco x520 phones and both have the same issue. wifi keeps dropping over and again every 10 seconds or so. It's like a loop........ drop .. reconnect .. drop .. reconnect .. and so on. tried two roms so far, currently on lineage os 16.0 and have the same issue on this rom too. on top of the connectivity problem, a new problem has came up .. the phone shuts down while playing games which is super annoying. and the phone heats up a lot while recharging the battery. i'm so fed up
Hello guys, i am under OF1 and using the Stang5litre note5 rom which was working great until i somehow lost all signal . I was trying to make 4g to work , after i entered my carriers apn settings i had really slow internet speeds ( edge) .
I downloaded an app called Advanced signal status and i switched to Gsm/cdma and i had H+ which was alot better. I kind of followed this thread https://forum.xda-developers.com/galaxy-s4-verizon/general/how-to-make-verizon-sch-i545-att-t3267687
I dont know if i messed with any other setting ( i think not) and after a power off my phone had zero signal ( a forbidden icon like this forbidden . I cannot make or receive calls and i cant use data. Oddly once in a while i get some sort of reception of signal ( like 1-2 lines) but again no data. I wiped cache and factory reset from recovery , but problem was still there...
Bottom line, the phone is unusable..
Any ideas?
P.S. ( i searched in the forums and couldnt find something really similar to my case , so i started this one )
Are you trying to use another carrier SIM on the Verizon s4?
StoneyJSG said:
Are you trying to use another carrier SIM on the Verizon s4?
Click to expand...
Click to collapse
yes , it was working ok for calls, and after entering apn settings data was working but suddenly everything stopped. I wiped and problem still there..
If you have a AT&T or t-mobile SIM, did you set the mode from CDMA to GSM in settings? What bootloader are you on? OF1, GPL1, or another? If you did a factory data reset, then redid the APN, it should work. You will get that annoying message saying "SIM not from Verizon" though.
Duckperson said:
Hello guys, i am under OF1 and using the Stang5litre note5 rom which was working great until i somehow lost all signal . I was trying to make 4g to work , after i entered my carriers apn settings i had really slow internet speeds ( edge) .
I downloaded an app called Advanced signal status and i switched to Gsm/cdma and i had H+ which was alot better. I kind of followed this thread https://forum.xda-developers.com/galaxy-s4-verizon/general/how-to-make-verizon-sch-i545-att-t3267687
I dont know if i messed with any other setting ( i think not) and after a power off my phone had zero signal ( a forbidden icon like this forbidden . I cannot make or receive calls and i cant use data. Oddly once in a while i get some sort of reception of signal ( like 1-2 lines) but again no data. I wiped cache and factory reset from recovery , but problem was still there...
Bottom line, the phone is unusable..
Any ideas?
P.S. ( i searched in the forums and couldnt find something really similar to my case , so i started this one )
Click to expand...
Click to collapse
Had the same thing happen to my S4 running that ROM, but I stayed on Verizon. Tried other ROMs, flashing recoveries, modems, etc and manually changing settings, but always same problem with no signal even when trying a new Verizon SIM. I came to the conclusion the modem got fried by it somehow.
StoneyJSG said:
If you have a AT&T or t-mobile SIM, did you set the mode from CDMA to GSM in settings? What bootloader are you on? OF1, GPL1, or another? If you did a factory data reset, then redid the APN, it should work. You will get that annoying message saying "SIM not from Verizon" though.
Click to expand...
Click to collapse
Well as I say in the OP i am under OF1 , i did a factory reset offcourse i still have the note5 rom and redid apn settings but nothing works(no signal no data) and the message is not there, that is something i like about this rom.
camparks said:
Had the same thing happen to my S4 running that ROM, but I stayed on Verizon. Tried other ROMs, flashing recoveries, modems, etc and manually changing settings, but always same problem with no signal even when trying a new Verizon SIM. I came to the conclusion the modem got fried by it somehow.
Click to expand...
Click to collapse
wow , that is really bad news . i ordered two new signal cables, just in case ( they were 1,5 usd) cause i have also replaced display and maybe i messed with them a bit , maybe i will try to reflash stock rom.. though i really hate this rom. The thing is it was working perfectly. Something i didnt mention is because i live in a humid environment and while repairing phone and maybe because the chinese frame wasnt that good from one side there is a gap that lets humidity in, (never spilled water in it , just humidity) , making the touch unusable. So i heated phone at 45-50 C( 113-122 F) which is not a very high temperature , and it fixes the problem , have done the procedure 2-3 times and never had an issue. maybe this time this was the culprit... I found this solution online somewhere and i didnt think it might be dangerous, so i tried it. Anyway it stopped to work after this iirc.. Sorry i failed to mention that
By the way Camparks what do you mean "fried your modem " ? How is that even possible? i mean by just installing a rom . I am not saying that i dont beleive you, just that it seems a bit strange .. doesnt it ?
What about this? maybe we should try it?
https://forum.xda-developers.com/galaxy-s4-verizon/development/modems-verizon-samsung-galaxy-s4-sch-t3740093
Try the stock ROM (even though it sucks). I'm with AT&T, but I slapped my SIM in my Verizon s4 and everything worked except mobile data because I didn't mess with the APN settings. I'm on the GPL1 firmware with root.
If stock ROM doesn't fix the issue, then your modem is probably fired like camparks said.
StoneyJSG said:
Try the stock ROM (even though it sucks). I'm with AT&T, but I slapped my SIM in my Verizon s4 and everything worked except mobile data because I didn't mess with the APN settings. I'm on the GPL1 firmware with root.
If stock ROM doesn't fix the issue, then your modem is probably fired like camparks said.
Click to expand...
Click to collapse
Ok, i will try it as soon as i can.
It seems strange that everything was working ok until i installed Advanced signal status app.. and i think even after uninstalling it , it changes those settings permanently. Anyway ill try it thanks
Okay i tried to flash stock rom and now i am getting repeating ufortunately app has stopped for many apps which makes the phone unusable , i forgot what i used to do for this error some weeks ago when i flashed it for the first time..
Edit: nvm , its fixed with a factory reset/wipe
ok i did flash it with stock rom, results are signal is really low, 1-2 lines and some random times 3 and after refreshing apn settings internet isnt working, so.. it does seem like the modem is fried. It shows E or H+ but it isnt really working.
Bottom line, it does seem to be fried.
P.S. Out of curiosity , i dont know if its worth to do but i found an S4 I9500 motherboard on ebay around 20 eur. You think it will be compatible ? framewise and all the other parts..