Mifi EC25A keeps losing 4g conection

Hello, I just received the EC25A mifi box. Installed the latest update (3.023). Every 2 minutes or so the box will lose 4g connection (AT&T) and will not re connect. Its placed in an area where its getting a constant 3 bars.

I am looking for a device that will transfer 4g to WiFi for whole home internet. So far I have tried the nighthawk M1 and that was DOA, I picked up the Mifi box, and I can’t keep it working.

Also, speeds are VERY slow. sub 10mbs on the nighthawk, i was getting ~20-30mbs

I had replied you in support email.