So it seems my S7 is on its last legs, so looking to upgrade to the S20. Usually i upgrade instore, but obviously that isnt possible at the moment and its ages since i last upgraded. Couple of questions:
1 - I buy the phone on the o2 store, can i use my existing SIM card in the new phone, or as my tariff will be changing do i need to use the SIM the phone comes with?
2 - I assume the NHS discount is still a thing with o2 as i can claim that
3 - Is Smart Switch the best way to transfer all apps/contacts/data etc between both devices, and does it work well?