I bought a Sony Xperia 10 III. I have a prepaid account for $15/month. I experiment with phones so I have other phones that I can put my SIM card into and they work. This new (to me) Xperia is off EBay. The seller says it is unlocked. Poking around on various websites seems to indicate that it is unlocked. When I check the IMEI using the T-Mobile BOYP website I get
This device is fully compatible with T-Mobile’s network technology.
- This device is fully compatible with T-Mobile’s network technology.
- This device is not blocked from use on our network.
- Your phone uses a physical SIM card to hold wireless account information.
When I use the Device information in the account for the block check, it says device not found.
My SIM doesn’t work in this Xperia. It shows T-Mobile and if I turn off the automatic network selection I can see the list of T-Mobile networks, but it won’t connect.
I have a bunch of old SIM cards. When I put a used Google Fi card in, it says I can use it but not for voice and text (well, it was used before in a different phone and cancelled). Same with a used AT&T GSM card.
I’ve called support a couple of times and they tell me that the phone is locked. Is it really?
I’m contacting the seller but haven’t heard back yet.