Right out of the box, is the way the USB port is being handled. My Note 4 with 5.x and 4.4.4 would charge just fine while I was copying files from it to a PC. In fact, it would charge at a pretty decent rate. Not as good as a Charger Module @ 2.1 A per the OEM wall wart, but it was okay. Now, 2 weeks ago, MM gets pushed onto my Note 4 and things are going wonky in a bad way. I spend a lot of needless and wasted time trying to figure out why in the hell I can't see the files on the phone. Got that straightened out. ( pull down the notification bar, and tell it what to do. ARGH!!! ) Okay, now I spend a lot of time working with pictures, several gigabytes of them, and don't get in any hurry to unplug the phone, move it to a "real charger".... I just leave it plugged into the PC. well, after a while, I hear the beep and the Audio voice "Battery Low!" Huh? the damn thing has been plugged in now for almost two hours, and the battery is going down? Yep, it will not charge if it is in file transfer mode. Now mind you, nothing physically has changed. same phone, same cables, same PC.... just a new OS called MM for Mystery Mangled Mess... worthless as tits on a boar hog IMO. I want to go back to 5.1.1, at least that is dependable. ~~~~~~~~~~~~~~~~~~~ Now for Part Two: Battery Life: ain't worth a shit now with MM. Nothing has changed except for MM instead of 5.1.1 I used to get thru a full day with 4.4.4, sometimes two days. with 5.1.1 the battery would last at least 12 hours before I was forced to put it on the charger. now, I have to put it on a charger every 2 or 3 hours of use???????? that is just not acceptable. That use? transferring files, sending pix on Facebook, reading the newspapers, sending emails and maybe download a file once in a while. ~~~~~~~~~~~~~~~~~~~ Sad Sack #3 it seems to be a lot more sensitive to pulling up apps that I did not ask for. randomly different apps just jump up and get in my way, I have to kill them so I can go on. I am going to put a piece of tape over the proximity sensor, that thing is driving me crazy... ~~~~~~~~~~~~~~~ your turn.