connection

[eyup]

there is no mobile phine signal

[pgn]

Guide: Is the network down for me or everyone? and Guide: How can I sort out my network issues? may help, @eyup. If not, check that O2 have not stopped your service: Guide: How to find help & contact O2 

Good luck, @eyup.

[Oxonian]

This might also be useful @eyup :-

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

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