I have a Droid Razr. It has been fine for about a year, but just recently it began shutting itself off several times a day. Girl at Verizon says I have to leave it with them for them to see it happen. My profession demands I have a phone on me throughout day. Any thoughts on what causes this? It seems to have started after last major update.
Have you tried a system cache clear?
Power down phone
Hold volume up/down & power simultaneously until you see the Boot Mode Selection Menu
Use volume down to navigate to 'Recovery', use volume up to select
Should see screen with triangle and exclamation point next to an Android
Press volume up/down simultaneously to go into system recovery *
Use volume rocker to navigate to 'wipe cache' and use power button to select
Once finished, use volume rocker to navigate to 'reboot system now' and use power button to select
* if doesn't work:
press and hold the volume down and wait for a second or two, then press and hold the volume up and the volume down buttons for 5-6 seconds and then release