I recently owned a Fenix 2 which, unfortunately, spontaneously rebooted during running and cycling activities quite frequently. After about ten months and a handful of calls to Garmin, whose only advice was to factory reset the device, I decided to return it to REI for something that I hoped would function properly.
Since I only run and cycle, I decided on a Forerunner 235 about a week ago. Since I tend to wear dress watches during the day, I don't use the FR235 when I'm not specifially performing an activity. To save battery, I simply turn it off when not in use. Unfortunately, I've noticed that when I power it back on, it usually reboots itself about three or five times before the time is shown on the screen. The number of times that it reboots at power-on is completely unpredictable. Sometimes it gets far enough into the boot sequence to "bleep" at me two or three of times, but other times, it simply shows the Garmin logo and then fades out and back on handful of times.
Before I return the 235 back to REI for a replacement, I thought I'd ask here to see if any other users have experienced the same behavior. If it's common, then I suppose I'll just keep the 235 and chalk it up to poor FFF.
For what it's worth, I've already performed a factory reset on the 235, and the firmware is currently on 4.20, GPS/3.00, Display/2.10, Bluetooth/2.20, WHR/2.60, CIQ/1.2.2
Thanks in advance for any and all help.