How do I program a sim card into my Moto g play 2023

If the device refuses the SIM, it is likely locked to Metro/T-Mobile. You will need to get the phone unlocked before you can use it on another carrier. However, that's a different story with T-Mo. I bought a financed P6a for cheap because I wanted to steal the display for my unlocked P6a (Google edition, factory unlocked). However, the phone had a clean financial bill of health, and iFixit had the screen in stock, so I unlocked the P6a to free it from their network.

The initial attempt was with a third-party provider, but no luck. I tried a second one, IIRC, and it was no better. :/... T-Mo does not easily let go of the carrier handcuff like AT&T does. I had to give the phone a number, keep it on their network, pay the balance troll toll, and make them honor their part of the deal. I would not have done this if the P6a was worth what it was then; I'd have dumped it and called it a wash or used it as a parts phone (the ending for most VZW phones for me due to the bootloader unlock BS they're known for as you CANNOT DOWNGRADE them due to the permanently locked bootloader).

Here's why I consider VZW phones "donor phones": Their refusal to allow downgrades and bootloader unlocking has given me problems when I had a phone with this cursed lockdown. Say I need to set up a fleet of "frozen in time" phones for a Chinese drone that somehow refuses to talk to modern devices. Yet, I have a perfectly viable Pixel like the VZW 3a 64GB, which I'd otherwise yeet into a recycling bin and be done with it because of the bootloader being permanently locked. It's literally a dead-end situation with these hardlocked phones!