J327P Show "This phone on a lease" and locked phone

the phone working but when add google account the following message appears on screen .and phone show lock how i solve this error
"This is phone on a lease
This means it is still owned by sprint. you need to close out the lease by returning the phone to us
or by paying off the remaining balance per your lease agreement. if you switched carriers as part
of a promotion , your new carrier well not pay off yor balance for you. please call us at (855) 326-7974 to
return phone or make final payment.
MEID 35************"


Operation: Info
Selected model: SM-J327P
Software version: 34.11

Searching Samsung modem... detected COM108
Reading phone info...
Model: SM-J327F
AP version: J327FXXU4ARF2
CSC version: J327FXXU3AQJ3
CP version: J327PVPU4ARF2
Product code: XXXXXXXXXXXTGY
Phone SN: 00000000000
IMEI: 359102087286952/35910208728695
Unique number: CQ300CF8FA873B4
Reading IMEI... OK
IMEI: 3591**************