It seems that the battery drain is due to apps running in the background. Like Bluetooth software i can connect to my cars head unit. If i leave it plugged in to the charger, the battery goes flat. It left me lost miles from nowhere. I then found that the cable appeared to be plugged in but was mot making a connection. Fixed that, but i still need to charge it up twice a day or more
Spoke to Samsung. Their customer service is second to none. Put the phone into safe mode, changed a few settings and its a new phone entirely. When it came it had no ring tones so i added one. Last week it turned into a beep and all my calls went to voice mail. After i was in safe mode, i had about 30 ring tones to select from, and found a setting that allowed me to receive calls again. Hard to work outchowxto get out of safe mode but somehow i did it and its all working again. Ill give it a month and if its still working may change my opinion of the phone.