changing sim card

[dsm]

need to change a very old large sim card to a nano sim for a new phone keeping old number. Can I do this online if so how ?

[jonsie · Accepted solution]

Best option is to call in any O2 store with photo ID

They will change the sim and transfer the number for you free of charge

The other option is to call customer service

We’re just customers like you but it sounds like you’ll need someone to access your account which can’t be done from here. If you message O2 using the links below, they should be able to help you with this

or give them a call on 202  or 0344 809 0202