Check to see if you have 4G in your area: https://giffgaff.com/coverage-and-service
Also check to ensure your phone can handle 4G (LTE)
Hi I just swap card from micro to nano 4G. And I buy good bag 4g for 18£. But when I change in options from 3G to 4g. Nothing happens. Can somebody help me.
I've answered on your other thread, hopefully the ed's will merge them for you.