I have a Simon XT with Brinks Home Security with Tmobile providing cell coverage. The max signal I can get at my location is 2 bars (despite the pre-sales rep checking the coverage and saying we should have strong signal).
I tried moving the panel to the highest location in the house, and have not been able to improve the signal.
One thought I had was to use AT&T's MicroCell to provide a strong cell signal. This would require changing the SIM to AT&T. How would I go about doing this?