more GB to my existing sim

[QuerkyM]

I have a new sim with more GB and I want to add it onto my existing sim please and phone number 

[63johnw]

Hi @QuerkyM  if the old and new sims are both with sky then you have a couple of options to get the new plan on your old number. Option one is to port your number to another network on PAYG then port it back onto the new sim. You can't port from sky to sky. The second option is to call sky and ask if they will put the new plan on the old sim but don't be surprised if they say no.