Yes, all plans can be bought/auto-renewed from credit. But:
if you presently have a auto-renew, you must stop it recurring here before you can buy a single plan
if you have a queued plan, you must cancel the next plan here before you can purchase a single plan
it's not currently possible to buy monthly rolling plans from credit, because they require a recurring card or PayPal payment
you should not add credit specifically to buy a plan. It's safer and easier to see the related articles and buy the plan direct
your credit must already be sufficient for your chosen plan, It's not possible to pay partly from credit and partly by another method
How to buy a plan online from credit:
Online: Start here and the option to “pay with balance” will appear when you're ready to buy:
giffgaff app: Just change your payment method to "credit balance", assuming it's not already selected.
By Phone: dial 43430 option 2 to choose a plan and pay from your credit balance using your device keypad.
What to do if your current plan hasn't expired yet:
your new plan will be queued ready to start at midnight on the day your present plan expires
it will not automatically start before then, even if the old plan runs out of data
to start it sooner, see How can I start a plan early
Did this solve your problem? If not, pop over to our friendly community for a quick response. Or ask one of our helpful agents for an answer within 24 hours.