Mobile data O2 Not working !! 😕

[Nico1]

I have my O2 number for some years now. My signal went from 4G and working fine. To showing H+ or even worse...E. and no proper signal or connectivity for last 2 months! 

What is happening to your 4G signal O2? This is outdoor and inside. West London or Central London! 

Why do I have to constantly rely on WiFi hotspots to get Internet? Why do I pay my mobile data membership for ? 

I want my 4G back ! 😫 ( I did restart my phone multiple times thats not it )... 

[pgn]

It could be poor signal where you are: Guide: How can I sort out my network issues? will help, @Nico1 

It could be a failing SIM, that needs you to present to O2 in an O2 Store with valid photo id.

Worst case, your handset may be faulty - if still in warranty, contact the manufacturer - you can test with a different working SIM from another phone on the same network also. Good luck!

[japitts]

The purpose of the SIM is to authenticate your phone onto the network. If you're getting coverage, then that's working.

This is more likely to be either a device fault or network config issue. Data connectivity issues should be expected in any location where the 4G/5G layer is congested or under-deployed.

[Oxonian]

This might also be useful @Nico1 :-

My Network App - Find Out More About Your Network Coverage | Apps | O2

https://www.o2.co.uk/apps/my-network