@Stephaniebuddie
Could be sim or phone failure.
Swap sims between phones and see which the fault follows.
Check guides:
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
I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.
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