Database Develop

Lost signal bug on Dual-Sim Stock ROM

I'm running the stock 4.4.4 ROM on my Moto G 2014 Dual Sim XT1068 Titan. I have a Sainsbury's SIM in SIM1 and a Three SIM in SIM2, which is also the data SIM.
I don't get very good reception in my flat on Three, so often when I move from room to room, I lose the signal completely but this causes a notification to appear saying that I've lost signal on the Sainsbury's SIM, even though that's showing full bars at the time. Even when I get signal back on the Three SIM, the notification doesn't go away and the only way to get rid of it is to tap it, which then opens the Mobile Network selection screen and takes ages to scan for networks before I can select one and close the screen.
Has anyone made a patch that fixes this annoying bug, ideally to make it not show any notification at all when the signal is lost, so that it can just resume silently when it's found again?

No-one else having this problem? I lose reception on my Three SIM2 at various points in my flat and get this annoying message incorrectly telling me that my Sainsbury's SIM1 has lost reception. I also often find that when the Sainsbury's SIM does lose reception, it won't automatically start working again when I get back within range of a signal and it says with the red cross/triangle showing.
At least I found a quicker way to get rid of it is to go to the Dual-SIM settings and disable/re-enable whichever SIM has lost signal.
I was thinking of finally updating to Lollipop to see if that fixes the problem. Does anyone know if it does or not?

doveman said:
No-one else having this problem? I lose reception on my Three SIM2 at various points in my flat and get this annoying message incorrectly telling me that my Sainsbury's SIM1 has lost reception. I also often find that when the Sainsbury's SIM does lose reception, it won't automatically start working again when I get back within range of a signal and it says with the red cross/triangle showing.
At least I found a quicker way to get rid of it is to go to the Dual-SIM settings and disable/re-enable whichever SIM has lost signal.
I was thinking of finally updating to Lollipop to see if that fixes the problem. Does anyone know if it does or not?
Click to expand...
Click to collapse
I use the stock rom 5.0.2 Lolipop in my Xt1069 Dual Sim 16GB and it does not warn me when I lose the signal ...

LudwigFerdinand18 said:
I use the stock rom 5.0.2 Lolipop in my Xt1069 Dual Sim 16GB and it does not warn me when I lose the signal ...
Click to expand...
Click to collapse
Thanks, I'll have to try updating then. In fact I already did but the update failed and it rebooted about 1/3rd of the way through, so I guess I'll have to completely wipe it and flash a Lollipop ROM.

No signal, hardware or software problem

Nexus 6 UK user on EE network. Started to have this problem about 2 mouths ago no signal emergency calls only, reboot the phone still no signal remove sim and put it back in works. This is happening about twice a day. Was running latest stock with root so changed to chroma custom rom thinking it could be radio problem but still happening. Got a replacment sim thinking it was damaged still happening. Phone is over a year old so starting to think hardware problem. Any help would be great.
Cheers

Have you checked your IMEI number?
Sent from my Nexus 6 using Tapatalk

Hi bushako the IMEI sames okay, I have flashed stock MMB29Q on today with no root to see if it makes any different.

sounds like neither a hardware nor software issue, but a carrier issue.

focus1881 said:
Nexus 6 UK user on EE network. Started to have this problem about 2 mouths ago no signal emergency calls only, reboot the phone still no signal remove sim and put it back in works. This is happening about twice a day. Was running latest stock with root so changed to chroma custom rom thinking it could be radio problem but still happening. Got a replacment sim thinking it was damaged still happening. Phone is over a year old so starting to think hardware problem. Any help would be great.
Cheers
Click to expand...
Click to collapse
When you remove and replace the sim card, is the phone on or off? Reason I'm asking is because I'm thinking about a possible problem with the contact pins of the sim card *slot*.
Also wouldn't hurt to check on the sim status next time it stops working.
System settings --> about phone --> (check that baseband version is showing something reasonable, then Status --> SIM Status and check what is under signal strength, cellular network type, service state, cellular network state, and IMEI.
Another thing that you may want to look at, is at System Settings --> wireless&networks/more --> cellular networks --> Preferred network type, and also in Network operators, make sure that you hit the button "choose automatically".
Now, the reason I want you to set it to choose automatically, is because of a glitch I've seen a few times on my service provider here in Canada. If it is set hard to my service provider, occasionally, it will be unable to connect to the network. This is especially the case when I'm *entering* a service area from somewhere that has no service. Note that my service provider uses only ONE MCCMNC, so go figure. Just make sure that you select choose automatically.
You can also try resetting the radio by putting it into airplane mode, counting to 10, and then back to normal.

Signal/Data not working (possible hardware problem)

Hi, so my problem is that i keep losing mobile signal (3g and LTE). I put the SIMcard to another phone and everything works fine.
Did a factory reset and still nothing, i even installed Sony Stock Jelly Bean ROM and again nothing. When it's set in 2G it works ok.
The other thing is that i can't tell when the signal is lost because it actually shows that there is signal but when i want to call someone or use internet i can't. Could someone help please

acceleron said:
Hi, so my problem is that i keep losing mobile signal (3g and LTE). I put the SIMcard to another phone and everything works fine.
Did a factory reset and still nothing, i even installed Sony Stock Jelly Bean ROM and again nothing. When it's set in 2G it works ok.
The other thing is that i can't tell when the signal is lost because it actually shows that there is signal but when i want to call someone or use internet i can't. Could someone help please
Click to expand...
Click to collapse
Note: This reply won't be helpful
You might have an issue that is similar to mine. My XSP also shows signal, however, the difference of your issue with mine is that, I cannot receive any SMS, or calls. If I attempt to call someone, it somehow "triggers" network polling and then the signal resets to a correct one. After then I am able to receive calls.
However it is persistent, later in time it will "freeze" again.
I highly suspected that it was my XSP. Fortunately upon some closer look, the true culprit would be the radio tower (reception) at my home. At my university, the network works extremely fine. And if i return to my home, the same issue reappears.
I guess you should try going to somewhere else that is quite far from your home, and check if the issue persists.
If you are however having such issue constantly everywhere, it might also be plausible that a certain bands are out of service at your area

Well about the area service, my friends SG S4 is with the same mobile operator as i am and has no problems with the signal or mobile data. Any help on what to do ?

SM-N950F 4G problem after last dec update

Hi guys, I have an issue with 4G after the last dec update. In 4G/3G/2G auto connect mode, usually the receiving data arrow ( v arrow below the 4G symbol in notification bar) gone missing and thus the connection got lost. Only transmitting arrow is visible (the ^ one). I have to wait for some minutes or turn to flight mode and back to get my data connection back.
In the beginning I don't really sure this issue is caused by the latest update, but after I tried nearly everything, including factory reset which is doesn't help, I think that the update is the problem.
I have tried my sim on another phone and it worked normally. I have tried another sim on my note 8 and it got the same problem.
Oh and this is only a 4G issue. My 3G works normally. And before the update, I never experienced this kind of problem.
Two of my friends got the same note 8 and one of them is also using the same carrier as me, but neither of them experiencing this issue.
Anyone can help?
Thanks in advance

I had this issue too, it seems 4g connection only got the problem...,

Problem solved, they replace my device

I have the same problem but seems like in a different way, when I got the phone first time I contacted my service provider to activate the 4G service cause it was inactive on my line due to provider's issues, anyway the phone worked on 4G for only 2 days, after that it kept working on 3G, I contacted the service provider many times but they have no issues with my SIM or handset.
I still don't know what is the problem, is it a hardware malfunction? Is it an installed app? Is it a Samsung Update? I don't know!

have tried getting a replacement sim card, I had same problem in the past and they had by mistake sent a sim that was not 4g, got replacement and problem solved

Well, the problem is that it worked at the fist time on 4G so the SIM was 4G not 3G, but I have just comeback from their store, at the first the technical support did something in their system and switched the phone to airplane mode then turn the network ON back and the deice worked on 4G but after a couple of minutes the phone switched to 3G without going back to 4G, then he advised me that this problem either a SIM or handset problem and it's always 90% SIM problem, so we changed the SIM card and the phone is working on 4G for around 30 minutes till now, I hope it will keep working on 4G

2 days and phone is still working on 4G, it was a SIM card problem

Aoa dear
I.have the issue of secure folder as its not there in my cell phone and when i install it from play store and open it but failed to open as it give the option knox mode failed

Xiaomi mi 9T Pro - Problems receiving calls while on 4G

Hello!
I hope someone can help me with this "little" problem that I'm experimenting with my Xiaomi mi 9T Pro running MIUI Global 10.3.3.0 (Stock) I checked everything before buying and the phone is fully compatible with my carrier (I'm from Venezuela), however, I noticed that when the phone is on 4G it switches to 3G/H/H+ in order to make/receive calls (which is pretty normal since my carrier does not support VoLTE). The problem comes when there is an incoming call, it should switch automatically to 3G/H/H+ BUT it does not happen all the time, in fact, I can say that it only happens 25% of the time when I was testing, of course, when it does not happen there is no way to receive the incoming call.
So far I tried:
- Forcing the phone to stay on 3G (everything works great)
- Testing the different network options (it switches from 4G to 3G but not always as it should)
- Switching from SIM slot 1 to slot 2
- At the moment the preferred network type is LTE/TD-SCDMA/UMTS (default)
Could it be a software issue? or could it be related to my carrier? I haven't tried using a SIM card from another carrier.
After all, I bought a PHONE that does not behave like an actual phone all the time, so, I hope someone can help me with this.
Thanks in advance.

Thank you, I almost thought I was the only one.
I bought my Xiaomi mi 9T Pro running MIUI Global 10.3.3.0 (Stock) a week ago and I have the same symptoms like you.
Im on A1 Network in Austria running default network settings and I realized after hours I couldn't make calls (and obviously did't receive any).
This is the first phone I had this network problems, and I am on A1 network for 20 years with different phones....
I hope someone can share some light why this happens and what are the best settings for European (Austrian) A1 network.
Trying to switch to LTE/UMTS, but that setting is always reset to the default above after reboot.
As its also my work phone it would be very bad not recognizing for hours that I'm not reachable...
Thank you !

A1 supports VoLTE, try to enable it on your phone, I have no issues running a dual SIM config with A1 and 3 .....

pietropizzi said:
Thank you, I almost thought I was the only one.
I bought my Xiaomi mi 9T Pro running MIUI Global 10.3.3.0 (Stock) a week ago and I have the same symptoms like you.
Im on A1 Network in Austria running default network settings and I realized after hours I couldn't make calls (and obviously did't receive any).
This is the first phone I had this network problems, and I am on A1 network for 20 years with different phones....
I hope someone can share some light why this happens and what are the best settings for European (Austrian) A1 network.
Trying to switch to LTE/UMTS, but that setting is always reset to the default above after reboot.
As its also my work phone it would be very bad not recognizing for hours that I'm not reachable...
Thank you !
Click to expand...
Click to collapse
Hi! It feels better knowing that I'm not alone.
The fact is that I can actually make calls (it take from 3 to 5 seconds switching from 4G to 3G/H), the problem comes when there is an incoming call, sometimes it works (it switches to 3G/H and when the call is ended, it switches back to 4G) but most it does not. I just tried LTE/UMTS and it does work but not for long, I can see that it happens and sometimes it does not. I found a "solution" which involves forcing to 3G/H but it's not the point, there should be a real solution. At this moment, I haven't found a correct network configuration, all the ones that I've tried just have worked for me for some time, and then the problem is back without even rebooting the phone. Could it be caused by a faulty SIM or it's just a network/carrier issue? I don't want to think that it's a hardware issue.

error23 said:
A1 supports VoLTE, try to enable it on your phone, I have no issues running a dual SIM config with A1 and 3 .....
Click to expand...
Click to collapse
Whats your ROM Version ?
I alreaddy tried to enable VoLTE, I can switch it on and the VoLTE Symbol appears.
The problem is - I have no caller ID. I don't even see the phone number when someone calls me ("unbekannter Anrufer" - "unknown caller")
That's not conveniant, so as soon as I switched OFF VoLTE caller recognition was enabled again.
Is VoWIFI working at you with A1 ? I can enable it but I don't get the symbot at home in my WIFI network.
So for now I see two options:
- the correct (stable) network configuration for Austria that persist in the phone configuration
- enabling VoLTE but with a solution for a working caller ID

I finally got found the solution
Problem is the notification settings.
This was somehow reset after the update to mui 11.
To fix the issue:
1. Go to settings
2. Click notification
3. Click the notification badges (3rd icon)
4. Find the "phone" icon
5. Enable the show notification
6. Exit to settings and test

Having same problem
Can someone help me I am from Malta and have Xiaomi mi9t pro and from last night stopped receiving calls and incoming . Tried with sim 1 and it worked but it happened again . I tried the notification settings but still the same problem .

I had trouble not receiving calls also...
After looking here, and also on YouTube, I started going through my phone again. I too was not getting my calls a lot, but I have only had my phone maybe 2 weeks, so there's not much on it yet. One thing I am always adding is themes. The theme feature is it's own pre installed app as I'm sure we've all seen. Different one's have been doing/blocking certain features at times on my phone. My husband's calls were being sent to voicemail, and some other important calls. I noticed the other day when I tried a new theme it locked me out of my phone with no preface to get back to the lock screen. I had to take a picture and select send to get back to the lock screen. Remembering this, I decided to go back to the original developer theme for the phone. My phone now rings. Original developer mode also controls the call feature, not just the theme, which I did not know or read until now. Going back to it I believe kind of reset my configuration. I would say give this a try for sure. Hope it helps someone else I love my phone and didn't want to lose it. FYI, I am on TMobile network in the USA.

Hi!
I have a very similar problem on a xiaomi redmi note 8t. I tried various settings, but failed. This is annoying because the phone is relatively new. I think it is a hardware problem.

Saulor said:
Hello!
I hope someone can help me with this "little" problem that I'm experimenting with my Xiaomi mi 9T Pro running MIUI Global 10.3.3.0 (Stock) I checked everything before buying and the phone is fully compatible with my carrier (I'm from Venezuela), however, I noticed that when the phone is on 4G it switches to 3G/H/H+ in order to make/receive calls (which is pretty normal since my carrier does not support VoLTE). The problem comes when there is an incoming call, it should switch automatically to 3G/H/H+ BUT it does not happen all the time, in fact, I can say that it only happens 25% of the time when I was testing, of course, when it does not happen there is no way to receive the incoming call.
So far I tried:
- Forcing the phone to stay on 3G (everything works great)
- Testing the different network options (it switches from 4G to 3G but not always as it should)
- Switching from SIM slot 1 to slot 2
- At the moment the preferred network type is LTE/TD-SCDMA/UMTS (default)
Could it be a software issue? or could it be related to my carrier? I haven't tried using a SIM card from another carrier.
After all, I bought a PHONE that does not behave like an actual phone all the time, so, I hope someone can help me with this.
Thanks in advance.
Click to expand...
Click to collapse
I have the same issue here in same phone but on EU MIUI 12.0.3.0 .. with the same symptoms u described .. i suspected in sim card and i replaced it with a new one and the issue still there .. did u find a solution for this issue?

I'm not sure if this is the same issue as what's described by OP, but it's somewhat similar (not receiving calls). Sometimes my colleagues will call me on Whatsapp and state that they're unable to reach me via the cellular network. This is what fixed it for me:
Settings - SIM cards & mobile networks - Select your sim card - turn off 'use volte (use volte to improve the quality of voice calls)'

scarmage said:
I'm not sure if this is the same issue as what's described by OP, but it's somewhat similar (not receiving calls). Sometimes my colleagues will call me on Whatsapp and state that they're unable to reach me via the cellular network. This is what fixed it for me:
Settings - SIM cards & mobile networks - Select your sim card - turn off 'use volte (use volte to improve the quality of voice calls)'
Click to expand...
Click to collapse
I tried this option and also not working the issue still there since 10 daysi also tried
Settings all specs then internal storage then sim 1 then change the setting to gsm only
After that the line working for 10 min and then again i can't receive calls or make ones

I have the same problem i have a redmi note 9 pro, i can't receive calls in 4G, i only can receive calls in Edge someone could resolve this? I tried all of these methods but nothing works