New handset

[lou_martin]

Hi. 

I have a new handset and have put my SIM in it. Yesterday, I had mobile data but today it is not working. 

[pgn]

@lou_martin - did you change from Android to iPhone?

Are you Contract or PAYG? 

Did you follow the prompt to add the O2 settings to the handset when you inserted the SIM card?

Were you on cellular WiFi or home broadband WiFi when it "worked" yesterday?

Check your APN settings are correctv

https://community.o2.co.uk/t5/Android/Connecting-Android-Phone-to-Data-Services/m-p/544202#U544202

There is a similar ref for Apple too, if you need it.

Otherwise Guide: How to find help & contact O2 

[MI5]

@lou_martin 

Are calls and texts working still and do you have a network signal showing on the phone screen?

Some guides may help.

Guide: How can I sort out my network issues? 

Guide: Is the network down for me or everyone? 

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