No 4G / LTE after android 6 update

[DeBoss]

Again an issue after updating android. This time updating from android 5.1 to 6

Yesterday I recieved a pop up that a system update was available.  Installed it with PC companion and checked the phone and settings.

All seemed to work but the phone does not connect to my 4G / LTE network anymore.

Did a factory reset and downloaded new APN settings all with no result.

So what's next ?

Last time i had an issue with the android 5 update and had to wait 2 months for the next update to solve my mobile data issue.

Any suggestions ?

[DeBoss · Accepted solution]

Update:

Phone returned from Sony service:  guess what ?    No problem found..

So back to where i was before.

Did the whole sequence again:  Factory and Network reset and restored my backuped data.

Result:  nope......

All i had was a fast battery draining phone and no LTE / 4G.

Just before i want to make an angry call to Sony i wanted to make sure that there is no issue at my telecom company.

I called them and they listened to my story.  They didn't see any strange things in the settings but the only thing they could do was do a reset (of these settings?).

I should restart the phone after 5 minutes and see what happens:   Yes !!  LTE / 4G is working again. 

I am happy of course but what bothers me is wat the relation is between and android update and messed up settings at the telecom provider.

Nevertheless,  for me: case closed.

Thank you all for your support.

[Loading179]

Hi

I am very sory to just pop in on this msg, but I have the very same problem, after the upgrade to MM

I have no longer had any LTE\4G network on my M5.

It just tries to get signal (bars) and does not get any further than that, I have to then change to: GSM

to get signal on my phone.