Seeking for your assistance regarding the iPhone 6 factory unlock.
You already approved the factory unlock of this iPhone 6 last June 19,2020 via email of [Email removed] but I am still having an issue saying that the sim inserted is invalid. We already restore or reset all settings, connected it to iTunes yet it does not work.
I bought this iPhone 6 in the Philippines and the seller mentioned it was originally bought from states in AT&T that is why I am asking for your help.
Hoping for your favorable response with this humble request.