No network signal - Xiaomi Redmi 3 Questions & Answers

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

Related

[Q] 2.3.3 fido 2G radio trouble

Hello, I have a strange issue with connecting to the fido network on the latest android.. I live in a valley and the signal wasn't the greatest although it used to always work perfectly .. I could be in my basement etc without any troubles . Now it keeps connecting and disconnecting on me with any subtle movement. (edge /2g), sometimes it doesn't even find the network or sometimes it says that my sim cannot be registered on the network. As an example I have 3 bars but my phone state says emergency calls only..
Although if I go into town and connect to 3G it works perfectly with no disconnections at all... I've tried cleaning the connectors, the sim itself, even swapped the radio itself.. tried different roms even.. tried reflashing the baseband..
There are several 3G tweaks although never came across any 2G ones..
Might anyone have any ideas what I could do? Could it just be that because there has been no official release of 2. 3. 3 for fido or Rogers? I'm truly stumped...
Any help would be truly appreciated.
Thank you..

No cellular network redmi 3

Hello, this is my first post on the forums here.
Iv'e purchased a Xiaomi Redmi 3 last week. It turned on fine and after the first turnoff-turn on it simply didn't turn on again and was stuck on the mi logo.
Iv'e downloaded the latest stable chinese rom and flashed using miflash and the phone started working properly again.
The problem is I do not have a cellular signal. It's either non existent (empty bars marked with 'x'), empty bars or one or two bars at most. Even when there are bars I cannot receive or make any calls (when i call the phone it just rings and the nothing happens).
The sim card itself is new (micro), the phone is new. I tried contacting the cellular company and they said everything is fine on their side, also iv'e tried the sim card on another device and it worked. I tried fiddling with different settings like changing from preferred lte to prefer 3g, adding new vpn, changing the sim card settings through the phone from WCDMA, only LTE so on and so forth and nothing worked.
Iv'e read around the forums here about the whole bootloader unlock, rooting, dev roms. I'm a newbie when it comes to these things and don't know weather I should do there and if it would help my problem.
Oh and last thing, I also verified that the device 3g/4g networks are compatible with the cellular companies in my country (same ones).
Thanks in advance,
Maybe there's a problem with ur set. I didn't root nor unlock the bootloader and reception has been fine for me from the start.
Sent from my Redmi 3 using Tapatalk
So you think it might be a faulty phone?
EDIT: I don't know if this helps or connected to my issue but i have this notification at the top saying "your SIM card isn't activated". I can't link to the pic since i'm a new user.
No one knows how to fix my problem?
I've got a similar problem I think.
I searched until I found that while flashing my IMEIs got lost and so the phone can't register to the networks.
Now I continue searching how to restore the IMEIs...
Derk

OP3 sudden loss of network signal

Hello,
Ive been facing some network issues on my new OP3 (bought 1 month back)
The phone didnt have any problem at all till yesterday when there was a sudden loss of signals in both my airtel SIMS.
OP3 is recognizing the SIM cards but doesnt show any signal. I tried swapping SIMS, my SIMS are working in other phones whereas other SIMS still dont show signal in mine.
However there were 2 instances where i regained signal and was able to make calls while is was at a particular location, but even that lasted for just 20-30 min.
I was using android vers 3.2.4 when this problem happened, tried updating to 3.2.7 (latest) but it still hasnt fixed the issue.
Thought it was a null IMEI problem, but Settings show IMEI nos. of both the SIMS
Tried manually selecting networks, mostly it says cannot connect...sometimes it doesnt do anything
Tried changing preferred networks in *#*#4636#*#* , hasnt helped either
And yes I tried soft and hard resetting too, hasnt helped.
Please do suggest any probable solutions.... Thanks You

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

[SOLVED] Cellular Problem with Redmi Note 9S

Solution: Disable "Dual 4G" option in the "SIM Cards & Mobile networks" settings
Hello, good day!
tl;dr: Phone stuck to no cellular signal, until I reboot, restart mobile radio power, or turning on airplane mode for a short while when turning off again.
---------------------------------------------------
I recently bought this phone as an upgrade to my old one. I transferred my sim, and all seems to be working pretty well. I lived in an area with very poor signal reception, so overnight, the phone doesn't have any signal reception other than WiFi.
The problem is that it remains that way (stuck on 'no signal') if it cannot get any signal for an extended period. The problem persists even if I went to an area with good cellular reception even in the city.
The problem seems to fix itself when I placed the phone either by activating airplane mode for a minute, turn off "mobile radio power" then back on again, or reboot my phone but it starts to get annoying over time.
I tried changing the preferred network type to the one my old phone used (LTE/CDMA auto (PRL)) to fix it, but no luck.
Does anyone know a permanent solution to this?
Default reset whit the SIM Putin and airplane oon
weedxlife said:
Default reset whit the SIM Putin and airplane oon
Click to expand...
Click to collapse
Hello,
By default reset, you mean a factory reset or a SIM card reset?
Factory reset bro. But if you don't. Try yet this option of SIM reset try it
weedxlife said:
Factory reset bro. But if you don't. Try yet this option of SIM reset try it
Click to expand...
Click to collapse
I tried the SIM Reset first and so far it is working perfectly but I need to monitor it first to check if the problem would persist in the long term.
Will update thread on the result.
================
Update: unfortunately, the SIM reset doesn't work. However, I tried swapping the SIM card to see if it makes any difference and surprisingly it did. I put in a SIM in slot 1 from a network with a good signal reception while my previous one on slot 2.
I would like to also note that the current SIM 1 has a successful Xiaomi activation & verified to use the chat features on the Messaging app while the old one does not.
All seems to work perfectly - but need further monitoring I can call it solved. Will update the thread on the result :good:
Update 2: The workaround above doesn't work. I sent to Xiaomi this issue.
laconix00 said:
I tried the SIM Reset first and so far it is working perfectly but I need to monitor it first to check if the problem would persist in the long term.
Will update thread on the result.
================
Update: unfortunately, the SIM reset doesn't work. However, I tried swapping the SIM card to see if it makes any difference and surprisingly it did. I put in a SIM in slot 1 from a network with a good signal reception while my previous one on slot 2.
I would like to also note that the current SIM 1 has a successful Xiaomi activation & verified to use the chat features on the Messaging app while the old one does not.
All seems to work perfectly - but need further monitoring I can call it solved. Will update the thread on the result :good:
Click to expand...
Click to collapse
My sim is in slot 1. still dropped calls. Seems like network disconnects and reconnects.
When call is dropped I immediately redial and sometimes no network.
Hi i have the same issue No signal, is there any tricks or tips or tools to fix this?
williamsonoma said:
My sim is in slot 1. still dropped calls. Seems like network disconnects and reconnects.
When call is dropped I immediately redial and sometimes no network.
Click to expand...
Click to collapse
Unfortunately, the workaround I posted doesn't seem to work also when my current SIM 1 can't pickup signal for at least 2-3 hours.
Yes I also experienced drop calls most notably when the signal drops below 0 bars (not no signal with an "X").
I can't find a good rationale a factory reset would solve the problem since nothing on my phone (modified settings, modded, or downloaded apps) that can affect the cellular network. So, I won't be taking that road for now.
I already sent feedback on Xiaomi and advice me to send the log files *fingers crossed*
Any updates..?
My father is experiencing similar experience with calls hang and even bad call quality, while pocophone f1 on the same network works flawlessly.
Data problem
I have a problem with my RedMi Note 9 Pro, when I make a call on 4G Airtel network(at least 4 bars) the data connection drops to an average g of 1.2kbps.
I have used the same Sim in the same area in my previous phone the Honor 9 Lite but it doesn't face any problem. Whenever I get a call on that phone the 4G data speed increases.
On the RedMi note 9 pro the data gets completely disconnected and even after I cut the call the data remains disconnected for 2 minutes or so. After that I resumes back. It even gets lesser speeds that my previous phone.
Sometimes the data drops without any reason. It stays disconnected for a minute or so and then tries to connect back. It has got horrible ping.
Anyone facing the same issues?
Having the same issue here. I modified phone settings several times and try with another apps but nothing working so far
I MAY HAVE FINALLY FIGURED OUT A POSSIBLE SOLUTION!
Disable "Dual 4G" option in the settings.
No issue so far for 3 days now

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