Phone blackout

[Jenny55]

I stay in G697JG area and my phone is in totally blackout had anyone else have the same issues 

[Bambino]

@Jenny55 See these guides:

How can I sort out my network issues? - o2uk

Why do I have poor coverage indoors? (o2.co.uk)

You can also try WiFi calling if O2 have enabled WiFi calling on your account. You then have to enable it in your MyO2 and it needs to be enabled in your phone's settings.

Wifi and 4G Calling explained | O2

Wifi and 4G Calling | Help & Support | O2