Hello, My iphone 6 will be working fine and at 35% charge, then all of a sudden it drops to 1%. Then goes off. If I then plug it into a charger it reboots back to 35%. I have restarted it then I restored it through itunes. Still did it. Today I dumped all the apps and restarted it and it still does it. It sometimes wont actually restart and you have to leave it for half an hour then plug it into a charger and it starts again!! Any ideas?