How to unlock Lg stylo LGMs631?

[tulipkhan88]

I got this lg phone
Lg stylo LGMs631
It's locked to tmobile us network I got unlock code for it but when put non supported sim it doesn't ask for unlock code also typed some codes with that normally prompt for unlock code but that also nothing work.
How to unlock ?

 

[tube517]

Call T-Mobile.

 

[Rukbat]

The device is not eligible for unlock, so it can't be unlocked.

 

[B. Diddy]

See the T-Mobile unlock policy here: https://support.t-mobile.com/docs/DOC-1588