Occasionally, during a call, the call will get disconnected and the network for the sim that was in call would get switched off, followed by the other sim. Toggling airplane mode brings back the network. This was more prevalent in MIUI, and after switching to CM12.1, it has become less frequent. Does anyone else have this issue?
Yeah
It is a issue with your SIM/mobile network.......................Mine has the same issue , but not with the phone . It is the sim card causing issue on all my phones
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Hey guys,
This morning, my Mate 9 stopped making or receiving calls. 4G data works just fine. I am on AT&T using the chinese version MHA-AL00, been using the phone for few months now without any issues.
When I go to Settings-> More->Mobile Network->Card1 Network->Preferred Network Type and set it to 3G/2G auto or 2G only, my phone doesn't have a signal anymore. Switching to 4G/3G/2G auto brings signal back right away but only data works.
I came across a thread with similar issue on mate 7 but tried what they suggested with no luck
https://forum.xda-developers.com/mate-7/help/make-receive-calls-t3245378
Any help or suggestions would be greatly appreciated! I love this phone, don't want lose it over this issue.
Thank you!
try change the sim card to the other sim slot and see what happens, i have two sims with tmobile and at the beginning my old sim was disconnecting for no reason I went and replaced it and problem was gone.
try airplane mode on, then off
a few days ago I switched from cm to AEX 7.1.2 on my moto g. Whether that has anything to do with it I don't know.
Anyway last night the phone was working fine then this morning I see that the cell network is disconnected and the phone doesn't see the simcard. However when I put in another simcard from a different network it works normally. I switch back to my sim and it works for about 20 seconds where I can make a call or text then it shuts down again and dowsn't recognize the sim then does again once I have switched the sims but only for 20 seconds. I don't understand what is happening to the phone and why it is doing this. I need help. I have tried picking different network modes from the list after inserting this code #*#*4636#*#* nothing has worked so far. I haven't systematically gone through each one at a time yet and the list is quite long. I haven't seen a list of modes that long before there are over 10 of them from auto prl to scdma etc... Some of them I have never heard of like the scdma one. wif and bluetooth are working ok if that means anything. Thanks for any help
Also when I go into settings the network section is greyed out and under prefered network type it says Invalid Network Mode (-1) Ignore. I only tried changing the modes when this problem arose my changing these modes was not the cause
i've had similar issues, when i skipped using mobile data for a long time, my non-data SIM would dropout intermittently. i changed SIM slots didn't solve it either. other SIM was fine in either slot. just before replacing what i thought was a faulty SIM, without turning mobile data on, i just set the problematic SIM for data. that solved mys issue. however, running mobile data on back on the original setting didnt cause any more issues either.
Hello friends I have Redmi 2 phone and using MIUI 8.5 Global Stable Rom.
Network on both sim goes on/off and data switches to on and off.Also sometimes call is not heard while on call.Switching to airplane mode and returning to normal mode fixes the issue temporary.Please fix both issues permanently.
Steps to reproduce:-
Some times the network switches to on/off and data connection gets on/off automatically.Even data connection is on.I am using 2G sim in 1st slot and Jio 4G sim in 2nd slot.I am facing this issue since I was in MIUI 7.5.global stable
I am using Redmi 2 phone.
This is very serious problem I am facing form long time.I expected that in next updates It would get solved but it didn't.It is persisting even when I am in global stable rom of 8.5
The data connection immediately gets off and then both the networks on the both sim gets to no network or no service and after few seconds it gets on and network comes back and data connection gets on.
Also some times call is not heard while on call.On switching to airplane mode and returning to normal mode the call problem gets solved but I need permanent solution .I think the "call not heard " problem has definitely connection with network on/off off problem.
Please solve this issue and suggest a solution.I have applied every possible solution available on this forum previously but nothing worked.For example I changed APN settings,select LTE only in phone information section etc,but none worked
Hi
I'm having a strange problem with my new A51, with two SIM cards in it.
After an indeterminate time the phone disconnects from cellular network.
It still shows on to the both cards the signal strength, but the phone no longer receives calls or has internet access throw cellular network.
And if I call any of the SIM card numbers from another phone, I get a network message saying the phone is disconnected.
All other functions on the phone seams to be ok. Turning wifi on and off has no effect in reconnecting to the cellular network.
But... If I try to call from A51 to any other number, the phone reregisters on cell network, the call is done and from that point on, all goes to normal. I can receive calls again and access the internet using the cellular network...
I went to the store were I bought it, and the gave me another one, but with the exact same problem.
So I believe is not a hardware problem.
I believe now that It could be a SIM problem, on one or both SIMS, which is odd
A software problem on A51 the need's to be patched, which is odd because it has effect on the most basic feature of the phone, which is receiving calls...
A strange behavior of the phone with my cellular service provider, which is odd too...
I'm trying now with only one SIM to see if the problems happens too...
Can any one suggest any other test or debug to try to clarify this issue ?
Thanks
antoniomch said:
Hi
I'm having a strange problem with my new A51, with two SIM cards in it.
After an indeterminate time the phone disconnects from cellular network.
It still shows on to the both cards the signal strength, but the phone no longer receives calls or has internet access throw cellular network.
And if I call any of the SIM card numbers from another phone, I get a network message saying the phone is disconnected.
All other functions on the phone seams to be ok. Turning wifi on and off has no effect in reconnecting to the cellular network.
But... If I try to call from A51 to any other number, the phone reregisters on cell network, the call is done and from that point on, all goes to normal. I can receive calls again and access the internet using the cellular network...
I went to the store were I bought it, and the gave me another one, but with the exact same problem.
So I believe is not a hardware problem.
I believe now that It could be a SIM problem, on one or both SIMS, which is odd
A software problem on A51 the need's to be patched, which is odd because it has effect on the most basic feature of the phone, which is receiving calls...
A strange behavior of the phone with my cellular service provider, which is odd too...
I'm trying now with only one SIM to see if the problems happens too...
Can any one suggest any other test or debug to try to clarify this issue ?
Thanks
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My wife have exact same issue with single sim.
I have a network issue with my OnePlus 8T. Whenever I enter an area that doesn't have great signal, if my phone connects to 4G, I completely lose all signal and the phone will read "No Service" or "Emergency Calls Only". The best thing I can do is toggle Airplane mode or restart the phone to fix it. The issue does not occur if I set my phone to 2G/3G only. My phone will have signal absolutely everywhere, there isn't a spot that I know of that doesn't get reception. However, the moment I tap "Mobile Data", if the phone connects to 4G and the signal isn't 50% or better. My phone just loses all network on the spot and refuses to return unless I do the two things I listed above. I've been in contact with my service provider, tried swapping SIM slots and cards, reset my network, verified APN is properly setup. Just about everything by now. Does anybody know of a possible solution to this?