I bought a new iPhone 5S yesterday (unlocked) and placed my activated nano sim in for the first time and there is no network connection at all (calls, messages, internet etc). When you call the number it goes straight to voicemail.
The O2 network however is being recognised and the 5 bar network connection is full, which leads me to think that the sim card isn't faulty, and that there is something wrong with the registration. I also tried changing the APN details (APN giffgaff.com, username: vertigo etc) but it's still not working.
Any help would be greatly appreciated!
when i activated my sim card on a friday it took until tuesday am to successfully activate.
this is because it takes 24 hours to activate. a 'whole' working day. so if you activate on a friday it might not be actioned until the next working day and then it will take 24 hours.
i did read a help file on giffgaff somewhere that told you day it would be done if you activated on different days i wish i coud lcould find it.
and an o2 iphone will wok on giffgaff so dont worry.
hope you have changed the mobile network settings though because giff gaff uses different ones to o2
spme iphones lock to the first sim card put in them so dont try another sim incase it locks.
also you will need to turn the phone off and on to get it working after its been activating. so keep trying this :-)