My sonim xp7 shutdown and wont turn on just flashing red light?
Solid RED light when charging and won't power up. Charge for 15 minutes then press and hold power and volume down - hold for 15 seconds, it may recalibrate and turn on, it worked on one phone for me, but not on the second phone.
Hmm.. Usually a red light means warning. Maybe you guys drained the battery of your phone. Try charging it for about 15 - 20 minutes then try turning it on.