how do I change my SIM card to the nano version to suit my new phone
The SIMs VM send out are the type which can be popped out/in to different sizes (so it can function as a standard or micro or nano sim.) Just apply a little pressure and it will pop out into a micro SIM, then do it again to pop out the smallest bit which will allow you to use it as a nano SIM.
In the event you have an old fixed size SIM type with no pop out segments, ring 789 / 0345 600 0789 and request a replacement SIM (it will be the pop out/in) type.)
- - - - - - Any opinions expressed by myself are entirely my own and do not represent Virgin Media in any way.