Data not working on iPhone 13 Pro - Full Signal, can make calls and texts

[DRS1993]

Ive recently completed a sim swap after having my iPhone stolen,

After a sim swap took over 72 hours I called O2 and they were able to activate my sim card - everything was working fine, then on 31st my ability to use Data just ended, I can still receive & make calls and texts.

- O2 have confirmed all blocks were removed 

I cant get through to anyone on chat or on the phone (I spent over an hour to just be hung up on) and on social media they take around 6 hours to response and so far were at my first security question,

Does anyone have an idea of what might be causing this / a fix?

[MI5]

@DRS1993 

Try dropping network selection down to 3g.

If this works, it means 4g was not enabled on your account.

[RafaC]

Hey @DRS1993 were you able to sort it out?