on 10-08-2018 14:18
Does your new phone state you what size the sim card needs? You can go into a o2 shop and ask them to swap the SIM. Over to the size you need. They will transfer your number from the old SIM card to the new one.
Don't force the SIM card in the tray as you run the risk of breaking the pins.
on 10-08-2018 16:26
OnePlus 6 (O2 & Sfr) and Z3 Tablet (Three UK)
on 13-08-2018 10:51
Hi @Jimtgreen, and welcome to the Community! How are you getting on with this since you last posted?