No signel

[Kell]

Last 7 days mast has been down by me i can get on line wifi but now my sim card is doing nothing any advice please ive spoken to o2 all they can say is mast be fixed soon I even went away and phone wouldn't work there any help would be great 

[Oxonian]

Please @Kell see :-

Guide: How can I sort out my network issues? 

Guide: Is the network down for me or everyone? 

Also :-

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

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

Understand your network coverage

With the My Network app you can keep an eye on your coverage, wherever you are. Download the app and you’ll be able to:

- check the status of our network in your area – you don’t even need to enter your postcode

- test your network speeds

- report any issues with your service.

It’s simple to use and means that you can check the network without having to visit the main site or even enter a postcode.

[pgn]

Guide: Is the network down for me or everyone? and Guide: How can I sort out my network issues? may help - if it turns out to be a faulty SIM, you will need to either call 202 and request a replacement (resulting in your existing SIM being disabled immediately) or take photo id and head into an O2 shop with your phone, @Kell - it is the only way to get a replacement Physical, plastic, SIM (and O2 and eSIM is not advisable at this time). Good luck.

[Enlli]

If you have no signal in a number of locations. (You said you went away) then it is more likely to be an account or SIM problem rather than a network fault. However,these may help 

Guide: Is the network down for me or everyone? 

Guide: How can I sort out my network issues? 

Download and register on thw My Network App for updates

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