how i unlock this iPhone?

Serial Number: C7JP61Mxxxxx
Warranty Status: Out Of Warranty (No Coverage)
Days Remaining: 0
Estimated Purchase Date: 1970.01.01
Purchase Country:
Registration Date: 1970.01.01
Image URL:
Exploded View URL:
Manual URL:
Product Description: iPhone 6
Config Description: IPHONE 6 MM 64GB GRAY
Sla Group Description:
Ac Plus Flag:
Is Loaner: N
Activation Lock Status (Off if empty):
Messages: Repair is unavailable
Available Repair Strategies:
IMEI Number: 3583700xxxxxxxx
MEID: 358370xxxxxxxx
ICCID:
First Unbrick Date: 2015.05.09
Last Unbrick Date: 1970.01.01
Unbricked: false
Unlocked: false
iOS version: 9.3.1
Initial Activation Policy ID: 2320
Initial Activation Policy Details: US GSM/VZW N61/N56 Service Policy
Applied Activation Policy ID: 23
Applied Activation Details: US AT&T Puerto Rico and US Virgin Islands Activation Policy
Next Tether Policy ID: 23
Next Tether Policy Details: US AT&T Puerto Rico and US Virgin Islands Activation Policy
Mac Address:
Bluetooth Mac Address:
Part Description: iPhone 6