While trying to list an old Ting iPhone for sale, I realized I was very confused as to what I should sell it as. A Ting-exclusive phone? An unlocked phone? A CDMA-only phone? I'm not sure what cell services my phone CAN or CANNOT sign up with.
When powered on, it says "No Service" in the top-left corner. In the SIM card tray, there's a gpp SIM card-shaped chip. After some Googling, I saw that this chip (pictured below) needs to be coupled with a white "reset" chip in order to unlock the phone and insert a new sim card for a new carrier. Am I correct? What carriers with that gpp-card unlocking process be limited to? I assume this gpp chip is left over from Ting's people?
I'll appreciate any clarification I can get. Thank you!