Battery draining quickly
I have has my Doogee N20 about 3 weeks, after a few teething problems all seemed ok. Now I am finding the battery is draining very quickly not even lasting 7 hours with not a lot of use. I have let the battery run out and recharging it, the charger is getting very warm and after 4 hours of charging (whilst turned off) it had 51% charge I used it for 3 minutes to check messages and it drained by 3%. Is this a common fault? Any suggestions other than send it back? Thanks for any help.