Network issue on sim 2 slot topic

I have two sims on my phone but no network on second sim. Please help me

Sent from my XT1068 using XDA Premium 4 mobile app

Unlocking SIM card slot topic

Does anyone know of any service that can actually unlock the G3 D851 as of now? I searched through the old threads and tried the ones people mentioned but they're all just refunding an saying they don't have a code.

I tried having a friend request an unlock from T-Mobile but they want the SIM card to remain in the device for 3 days.