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22-07-2021 08:36 - edited 22-07-2021 08:38
22-07-2021 08:36 - edited 22-07-2021 08:38
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22-07-2021 08:40 - edited 22-07-2021 08:42
22-07-2021 08:40 - edited 22-07-2021 08:42
See if any of this helps https://community.o2.co.uk/t5/Android/Connecting-Android-Phone-to-Data-Services/m-p/544202#U544202
Also check settings try changing your apn to "mobile.o2.co.uk"
Otherwise give O2 a call on any number in this guide Guide: Coronavirus Community Help and Support
Veritas Numquam Perit