New phone, new sim, sim activated. Old sim no longer working new sim not working? Can't call text

[Housekey]

Hi git my new phone and sim. Sim has been activated and my old sim no longer working. I can't use my phone to make or receive calls or texts. This has been the case for nearly 24hrs. What can I do?

[Bambino · Accepted solution]

@Housekey Have you turned your new phone off and back on again? If this doesn't resolve the problem, you'll need to speak to customer service: Guide: Coronavirus Community Help and Support Instructions on how to download and use Skype to call O2's 0800 numbers are in the link.

You can also reach O2 via social media:
Facebook (https://o2uk.co/O2CFB), Twitter (https://o2uk.co/O2CTW), or Instagram (https://o2uk.co/O2CIG)
Or you can call them on 0800 081 0255