I’m trying to unlock an old Sony Ericsson Xperia acro IS11S (Japanese), after send the phone to the store for unlocking they called me saying it is impossible, because it can’t recognize the local network here in Europe (even selecting Overseas GSM).
Using the code “*#*#7378423#*#*” and checking the lock screen I can’t understand what is going on. Check the picture attached.
[?] Means locked? In others phones you can find [x] or [o] but never something like [?]
Thank you in advance!