18-05-2020 09:20
18-05-2020 09:24
Don't do anything.
The contract will change on the current sim.
The new sim is only required if changing phones with a different sim size.
18-05-2020 09:26
Hi @Natasha5
You need to contact O2 asap. Buying a new sim only deal on your account appears to O2 that you are upgrading YOUR tariff instead of setting up a new one for your son.
All numbers for O2 are in this guide Guide: Coronavirus Community Help and Support
the best one to call appears to be 0800 587 4005
Veritas Numquam Perit