This is not unlocking service. It wont unlock device. it will just clear all unpaid bills for device.
This service will change your IMEI status from: Unpaid bills => CLEAN
Sample of supported MEID / ESN
IMEI: 35875XXXXXXXXXX
Model: CPO IP 5S GOLD 16GB SGL
Model Number: RECIP5S16GD1
Manufacturer: APPLE, INC
BLACKLIST STATUS: UNPAID BILLS - SPCS
ICCID: 89011201000244877310
IMSI: 310120124487731
SPCS: YES
Activation: NO
where the results are:
SPCS: YES
or
BLACKLIST STATUS: UNPAID BILLS - SPCS
Be carefull not all MEIDs supported. Use Sprint Official Checker to get full ESN / MEID results
140# Sprint Official Check With SPCS Status SPCS/ICCID