Mobile connection dropping randomly

[cakeforcat]

Hi, I've been using the Xperia XZ2 Compact for the past week and have been experiencing an issue with mobile connectivity. Here is a copy from the thread in Sony support Forum.

I'm also experiencing this issue, but I get random disconnects and/or changes of carrier even when standing still. Here are some thing I also noticed and I hope we can get a fix soon:
- when I connect through national roaming I get a notification that it is disabled even though it's not and it disappears immediately.
- Sometimes when I'm connected to LTE+ I don't have any mobile data for short periods of time, but I think this issue is not related.
- When I lose signal nothing happens other than the signal bar changes to an outline but when I get randomly disconnected(or unregistered if you want to call it that way) I get a notification that my mobile carriers' network is unavailable.
I live in Poland and I'm using a virtual carrier called "mobile vikings" that uses the infrastructure of P4(commonly known as "Play") and allows roaming to t-mobile and "PLUS" but only on max H+ speeds. I tested my SIM on my previous phone - Xperia M5, and it's working just fine. I hope because it's happening to other ppl that it's a software issue that can be fixed in next updates.​

Is anyone also experiencing a similar issue? I can post my log I extracted if anyone wants to see it.

 

[mirhl]

https://talk.sonymobile.com/t5/Xperia-XZ2-Compact/GSM-disconnects-randomly/td-p/1324651

 

[viktor1983]

Same issue here, with Telenor Hungary. Usually I got this on low reception areas, where my previous Z5C still used to work. I'm "disconnected" right now, so I tried to search for mobile networks: my home network shows up as "Emergency calls only" for 2G/3G/LTE also.

 

[cakeforcat]

I have tested my SIM now on 2 other phones and it works just fine. I also contacted my carrier and they reconfigured my number in their system(something like a reboot for your number). Now I'm 100% sure it's the phone's fault. Sony needs to at least acknowledge it.