O2

Hi thereYes you can keep your old sim and transfer it over as both devices take nano sims. If you receive a replacement sim with your new device there’s no need to use it.

As a colleague of O2 I am aware of what can and cannot be changed through the MyO2 app. If the poster has upgraded recently (I.e in the last 12 months) then you can change spend cap through the app

You should be able to change through the MyO2 app shown in the picture below

Was the contract done with Carphone warehouse?I’ve noticed that sometimes if this is the case then the app will show the tariff excluding the extra data bolt on. So for example if you were sold a 3GB tariff intact it’s a 1GB tariff with a 2GB data bo...