This microwave gets 1 star because it only lasted 10 months before dying. 
The process for opening a service ticket was good,But the subcontractor service vendor was bad about communicating when they would diagnose it.
The microwave would not indicate it's fault and all buttons and functions worked,But no heat.
The microwave connected to Internet and cell phone software ran to diagnose itself but it said there were no faults.
It is still broken. The repairman comes back next week.
I had to go out and buy a countertop unit to stay functional in the kitchen.