I bought a Galaxy S21 used will it work with both Verizon and T-Mobile SIMs?

🔄 SIM Swap & Device Change
1

I picked up a used Galaxy S21 and I’m planning to activate service with Infimobile. Will it work with both your Verizon and T-Mobile SIM options, or do I need to choose carefully?

2

I’m using a used Galaxy S21 myself, and yep — it works great with Infimobile!

The key is whether your S21 is unlocked. If it is, you should be able to use either the Verizon or T-Mobile SIM — I’ve tested both on mine.

Here’s what I did to make sure:

:white_check_mark: Ran my IMEI through Infimobile’s compatibility checker (just to be safe)
:white_check_mark: Made sure VoLTE was enabled
:white_check_mark: Checked APN settings after activating

If your phone was originally locked to a specific carrier, just make sure it’s been fully unlocked before you activate.