After N update, problems with network coverage

[Jay39]

 I am using Sony xperia xa ultra dual sim device. I update my phone then after I am using my phone so network problems some time networks very very weak and sometimes no problems full network and I am using only GSM so full network and no drops but I am using lte so problems network drops and very very weak 📶 so plz help me 

[Izzytpo]

Hi all 

My Xperia has just started to loose coverage when using cell phone. 

[Sinandurmus]

I have a problem with the signal and programs in my phone I have an emergency problem after the last update has helped in an emergency thank you

[Khursheede]

My XA has network problem since MM and after N update i didn't find any improvement. When i compared it to my other phone (Samsung A7) XA has has very poor coverage.