Cant access network settings (trying to enable roaming)

[Toshk]

Model: P8
Country: UK
Network Vodafone

When I click on "mobile Networks" button, the screen freezes/goes slightly dark for a second and then just returns back to the same menu,

I tried downloading a couple of apps which take you directly to the network settings menu but they react the same way, freeze/go slightly dark for a second and then back to the main screen.

I'm only trying to enable the roaming, so if there are any other ways to just enable the roaming that would be great

Tried:
Resetting phone
it is up to date and not rooted
Removing sim card and cleaning
resetting phone again
checking with vodafone that roaming is allowed on my plan

 

[srkmagnus]

After the factory reset don't setup the device - skip it. Also don't install anything. Go into the settings as the first thing and see if that works.

 

[Toshk]

During the factory reset after the phone switches off i get a "factory reset failed" message come up and then after a restart, the phone behaves like it was properly restet with all the setup options occuring and all data gone, i skipped the options and tried the network settings and it acts exactly like it did before. I didn't install any apps or anything like that.


edit: model number : GRA-L09