This service is directly from Sony database, the Unlock Code is 99.99% correct unless your IMEI is wrong, your phone is rooted or your phone is refurbished.
All Levels can come back:
SPCK, NCK, NSCK, CCK
Please do not use this service for Telcel Mexico or any other network provider who delivers his phones with broken GDFS (0 Code Entry Left) or phone which has "too many wrong codes"
Please make sure to check the counter of your phone
[MAKE SURE ATTEMPTS ARE AVAILABLE ON PHONE]:
Switch on your phone without SIM card Compose *#*#7378423#*#*
Select Service Info and then Simlock, If X is with Network and it is not 0,
You can unlock your phone via code.
If X is 0 or 255, your counter is locked and unlocking via IMEI is not possible.
NO REFUND, Given with devices with 0 Attempt. We have a software solution availalbe for these.
Make sure your Sony Xperia are actually ASKING for code and don't have "Device Unlock App" installed on the phone, specially if it's a Sony Xperia Z3 from T-Mobile USA. If you order code for a Sony and claim the phone is not asking for code, we won't provide any refund, it's your responsibility to check before place your order !