how can i change my phone carrier service with a different SIM card

[AC Question]

I have a LG phone with no SIM card and with prior T-Mobile service. I want to replace the SIM card and get a different carrier on the same phone. How do I do this?

 

[hallux]

If you had T-Mobile it had a SIM card, that's how T-Mobile has worked for many years. Depending on the carrier, you could get a SIM card from them and pop it in the phone. The phone may need to be unlocked by T-Mobile first, if it even has the bands to support the network you want to use it on.

 

[Rukbat]

And TMobile probably won't unlock it unless it's currently on their service, so it may cost you a month of monthly service to get it unlocked. (Unlocking services - you can find them on eBay - are a little cheaper.)