HT4993: Sprint Wireless Online SupportLearn about Sprint Wireless Online Support
Currently Being ModeratedNov 24, 2012 4:46 PM (in response to songhongbao)
Answered in your other question. If your iPhone is locked to Sprint,
contact Sprint to see if you qualify for unlocking. Only the carrier
that the iPhone is locked to can unlock it.
Currently Being ModeratedNov 25, 2012 8:02 AM (in response to songhongbao)
You call them. If you are not a Sprint customer, they will not unlock the SIM slot.