@PG2
Your phones data storage will not increase, not sure how you thought this was possible as that a phone based storage issue.
If you mean your data allowance then have a look here #
https://community.o2.co.uk/t5/New-to-O2/Virgin-Mobile-to-O2-All-you-need-to-know/
This is not customer services and we dont have access to your account
I do not work for o2 or any VMo2 /Telefonica/Liberty Global Company
