Simon XTi w/ thermostat on Brinks

When moving services if the XTi has the 4G modem and Brinks releases it does anything else have to be done on the system besides register it with Surety? I have a thermostat, smoke, motion and window/door sensors. If the panel is no good(3G? or they wont release it) is there one that works with all the same sensors(no idea if mine are z-wave or the 319 I see listed or how to tell)? I see the IQ Panel 4 recommended but no idea if that works with the sensors so I dont have to buy new ones? Tyia!

The SImon XTi uses a 319.5Mhz sensor radio, and the existing sensors would work with the IQ Panel 4 in our bundles here:

If you already have a 4G LTE radio and the existing Alarm.com account is deleted by the current provider, you could just register for service using that existing panel instead.

Ok great. Yes I believe it is a 4G one they replaced it a few years back(mandatory upgrade). Thanks for the info!