Network problem, LTE not working, extremely bad call quality - Xiaomi Redmi Note 4 Questions & Answers

Hello,
I have an issue with my network, it works differently depending on its quality :
- on LTE I loose very often my connection (99 asu), can't call, can't send / receive SMS, can't go on internet
- on H+ the connection is stable, i can send / receive SMS, I can go on internet, when I call someone I can clealry ear him but he can't ear me correctly
I did a lot of tests, SMSC number is OK, APN is OK, mic is working. It used to work perfectly... When I put my SIM in another phone, all is working !
I'm on los 14.1 (1st october 17), I flashed to los from MIUI (Global .eu) due to this problem. I start to doubt about the quality of Xiaomi products, I already had to change de USB dock-charger, the audio jack is not working wel, the battery is not that good and the camera is really bad. (< 6 months lifetime). I will not buy any more.
Is that a software / hardware problem ? A kernel problem (something in common with all ROMs) ?
Thank you very much !
Redmi note 4 MIDO
ROM los 14.1 (1st october 17)

Related

No network signal

Hi to all.
I put Cofface's cyano into my Redmi 3 a week ago and it worked fine except for the network signal that seemed to me to be weaker than on stable or dev miui rom. Yesterday I don't know what i did, i just switched the network type from the services menu (*#*#4636#*#*) to see the signal strenght of 2g/3g/4g and after doing that, the phone stopped to take signal with my SIM in any network type. So i switched back through MiFlash (and selected flash all option), to the Dev and also to the stable rom, but now I just have 4G working.
I tried to put again CM and i get no signal in every network type, even trying to restore a nandroid backup that i made when the phone worked. I also tried to flash through fastboot the NON-HSLO.bin took from developer rom, but nothing changed. What could it be? Where I live the 4G is not everywhere so most of the time I'll be without signal and it would be really frustrating.
I tried my sim in a Samsung phone and it takes both 2g/3g (the phone doesn't have 4g) , but trying another sim in my phone (of the same carrier) gives me the same result of above : only 4g . While on CM that sim could connect (only 4g) but mine not.
Please help me! :crying:
sorry if i didn't explain myself well, but I'm not english
EDIT: with the 4G i can only surf on the net but i can't make or receive phone calls. I'm giving up on this phone
EDIT2: following some guides I erased modemst1 and modemst2 but now I'm unable to get IMEI and I have unknown baseband
I have the same problem as you (almost)
http://forum.xda-developers.com/redmi-3/help/cellular-network-redmi-3-t3370459
I also have poor reception and can't make any call or receive them on any band 2g/3g/4g and i have this problem since I received the phone.
Did you fix your problem??
I have the same problem of very bad cellular signals.
with the same carrier, when other phones 2 samsung, 1 chinese (cheap unbranded), one very old nokia all have good reception, xiaomi redmi 3 pro is inaccessible from other phones.
today I'll try to install some signal booster apps from thestreet.com/story/11733410/1/7-apps-that-improve-smartphone-reception.html hopping for the best.
if anyone find any solution please update

Problem: Network signal unstable/weak

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

LeEco Le Max 2 X821 on Verizon

I was wondering if anyone has this model or any Le Max 2 models on Verizon. It's compatible with 4 of 5 bands on Verizon but I know it works differently in real life.
I know for certain it's compatible with all bands except B13.
Thanks.
Heyyo, offhand I have seen old posts that it does work as long as you have your sim card already activated and transferred from a working phone on Verizon's network.
I have my X820 on Xfinity Mobile, which is a Verizon Mvno.
I am using Pixel-Exp. Rom (android 8.1). Everything works except VoLte.
I put my X820 in "CDMA + LTE/EvDo" mode, When data turns on, it connects to LTE without any issue(Band 4 here). Any time when I place a phone call, data disconnect automatically. After the call is finished, The LTE data connects back again automatically. When sending a MMS, the phone will automatically switch to 3G mode and send out MMS, after it finish sending, the phone would back on LTE automatically.
This is the way it works without Volte. I guess Verizon would not let any non-verizon phone use its VoLte so this is the best we can have now.
I also tested my X820 with a ATT Sim, everything works including Volte.
3 android 8.1 Rom tested on my X820:
Lineage can't set APN for Xfinity / Verizon, Quick Charge does not working, CDLA only works on one orientation.
AOSIP is very smooth and quick, but Quick Charge does not working, CDLA only works on one orientation.
Pixel-Exp. is little less smooth than AOSIP, Quick Charge works, CDLA works.

Redmi Note 3 Pro Network Issue

I've been using RN3 and testing several roms and kernels since the release. As it being my primary device, I'm facing some network issues with the phone. The mobile network connectivity is very flawed and unstable since a month. I'm attaching a link of video of exact problem faced by me(Keep staring at the network icon in notification panel when I started the youtube video). The network abrupts suddenly and then comes back making it unstable, this whole thing happens a lot while internet usage. This makes my gaming experience dull (while playing PUBG and Mobile Legends)
Here are the measures that I've taken till now:
1.) Tried several roms such as Pixel Experience 9.0, Havoc OS 3.1 Android 10, Resurrection Remix .
2.) I got my network cable replaced from a local phone repairing shop.
3.) I tried to toggle through many network types in Engineering mode.
4.) The sim card I'm currently using is Airtel India so Volte support isn't there on RN3. Tried turning off the Volte option.
Current ROM and Kernel: Havoc OS 3.1 Jan 2020 Security Patch and Elindir Kernel V2 60Hz oc.
Any suggestion would be appreciated. Thank you.
Video link: https://drive.google.com/file/d/0B2tuRUoR8zjQelM5b2NUbVVfbU5NQ3RvVFVTQnFnbGZVMzZv/view?usp=sharing
Dynamikkk._ said:
I've been using RN3 and testing several roms and kernels since the release. As it being my primary device, I'm facing some network issues with the phone. The mobile network connectivity is very flawed and unstable since a month. I'm attaching a link of video of exact problem faced by me(Keep staring at the network icon in notification panel when I started the youtube video). The network abrupts suddenly and then comes back making it unstable, this whole thing happens a lot while internet usage. This makes my gaming experience dull (while playing PUBG and Mobile Legends)
Here are the measures that I've taken till now:
1.) Tried several roms such as Pixel Experience 9.0, Havoc OS 3.1 Android 10, Resurrection Remix .
2.) I got my network cable replaced from a local phone repairing shop.
3.) I tried to toggle through many network types in Engineering mode.
4.) The sim card I'm currently using is Airtel India so Volte support isn't there on RN3. Tried turning off the Volte option.
Current ROM and Kernel: Havoc OS 3.1 Jan 2020 Security Patch and Elindir Kernel V2 60Hz oc.
Any suggestion would be appreciated. Thank you.
Video link: https://drive.google.com/file/d/0B2tuRUoR8zjQelM5b2NUbVVfbU5NQ3RvVFVTQnFnbGZVMzZv/view?usp=sharing
Click to expand...
Click to collapse
Jio works only best on kenzo coz it supports volte on kenzo and stays in lte mode all the time even when u r calling someone it wont change to 2g.
Black_Stark said:
Jio works only best on kenzo coz it supports volte on kenzo and stays in lte mode all the time even when u r calling someone it wont change to 2g.
Click to expand...
Click to collapse
Jio network is very poor at my place so I switched to Airtel. This problem arised before a month or so. Before that everything was fine.
P.S. Airtel is the fastest 4G network in India
Dynamikkk._ said:
Jio network is very poor at my place so I switched to Airtel. This problem arised before a month or so. Before that everything was fine.
P.S. Airtel is the fastest 4G network in India
Click to expand...
Click to collapse
If Both jio and airtel network is poor then its phone issue. Did u change the charging board? The one which comes with microusb port.
Original board is HMFS. Check if its HMFS or CTFS ?
CHECK those spring antenna contacts are properly connected inside board.
Black_Stark said:
If Both jio and airtel network is poor then its phone issue. Did u change the charging board? The one which comes with microusb port.
Original board is HMFS. Check if its HMFS or CTFS ?
CHECK those spring antenna contacts are properly connected inside board.
Click to expand...
Click to collapse
Yes I got the charging board changed nearly before a month and I believe the problem arised since then.
Now I don't know how to distinguish between a HMFS or CTFS, Would you please tell me the exact difference so that I can identify and get it replaced?
Dynamikkk._ said:
Yes I got the charging board changed nearly before a month and I believe the problem arised since then.
Now I don't know how to distinguish between a HMFS or CTFS, Would you please tell me the exact difference so that I can identify and get it replaced?
Click to expand...
Click to collapse
Open ur phone and check the board. Common sense. :laugh:
Black_Stark said:
Open ur phone and check the board. Common sense. :laugh:
Click to expand...
Click to collapse
Nothing mentioned on the board as such
Dynamikkk._ said:
Nothing mentioned on the board as such
Click to expand...
Click to collapse
It should start with " H3A ..... XXXX "
CHECK BELOW MY POST IN ONE OF THREAD. I UPLOADED PICS THERE.
https://forum.xda-developers.com/re...charging-charging-board-t3671977/post75976883
Hello guys
My problem is a bit different
I have a jio sim in slot 1, and the problem is that I can't call a few jio users(only a few), some I can call but some I can't
Incoming from that no. Is perfect
But I don't know what is the problem
Is it hardware issue or software or something else
Pls help me
Solution [Fix]
This is how I managed to fix the issue-
I did not change any hardware. I simply installed Network Signal Guru and locked LTE Band 40 while being on the LTE/CDMA/WCDMA in Engineering mode. I used it for 3-4 days and slowly I started to notice smoother connection experience. Finally, I stopped using the app and I'm back to normal and stable Airtel 4G connection.
Thanks @Black_Stark for helping with this thread .

Question Realme GT2 Pro-Bluetooth device does not work micro

Hi!!!
The microphone does not work with Bluetooth devices, JBL Reflect Contour 2 headphones, Cardo Freecom2 (Motorcycle Helmet) and the one in the car (Peugeot 308). In all it connects perfectly, but the micro is not active. I have restored the device, and I have tried it first, and nothing, either.
Thank you!!!
Uriapab said:
Hi!!!
The microphone does not work with Bluetooth devices, JBL Reflect Contour 2 headphones, Cardo Freecom2 (Motorcycle Helmet) and the one in the car (Peugeot 308). In all it connects perfectly, but the micro is not active. I have restored the device, and I have tried it first, and nothing, either.
Thank you!!!
Click to expand...
Click to collapse
Hey! Have you solved the problem?
504 / 5.000
Resultados de traducción​
star_border
Aafter two months, going through the Technical Service, in the end they have already indicated to me how to solve it, in a "patch" plan and thanks to **** from the Telegram group (Thank you very much). Well, it seems that it is a problem with the Bluetooth codecs, which are wrong. The solution, because there are two ways, leave the operator's network at 3g/2g when the device is going to be used, or, in my case with Movistar, deactivate the 4G option of the operator's network data. With vodafone, **** tells me that there is no option!
Come on, it's a chore..... that every time you go to take the car or motorcycle, you have to deactivate the 4G option... anyway
I hope they get their act together and solve this problem...which, by the way, also happens to other mobiles, such as the One Plus Nord, owned by ****'s wife, the same thing happens....
Regards
I just tried to call from my car and have the same problem. It's still not fixed? Insane how bad this company is...
Edit. Tried changing all bluetooth related settings in Developer Options, reseting BT settings etc. No luck.
Seems like the only fix is disabling VoLTE so phone swaps to 3G during calls but that leads to worse call quality and 3G network in my country is set to be disabled soon...
Edit2. My Sony XM4s seem to work well, so it's a problem with older BT devices or ones using basic codecs (SBC).
Same problem on my GT 2 Pro. Do you have any other solution besides disabling 4G?
Try restet your APN or better set by yourself. Tick all carrier there. I don't have this problem.
Any fix?
Confirm the issue. External mic only working when VoLTE is disabled.

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