I was using an imate Kjam.
The first one had to be replaced under waranty after approx 6mths.
The replacement unit worked fine for about a year, then the touch screen started losing it's "touch" capability. There were "dead" spots in a few places.
Then the blue tooth started playing up. Had trouble connecting to bluetooth ear piece. Tested ear pce on other phones & worked fine.
Also started having trouble with it connecting to the car bluetooth.
Ended up retiring it & getting a normal ph.