T-Mobile with Particle SIM?

Do we have to get a different SIM if we want to use a T-mobile tower and no ATT is nearby?
I have the 2G only Electron.

I assume you are from USA and the information from: https://www.particle.io/cellular shows that :particle: sim has both AT&T and T-Mobile serving as the operator.

So the :particle: sim should work fine.