This is the first time this has happened. http://i.imgur.com/EYlwUqO.jpg I was using a Samsung charger and battery. I was using a third party cable but changing it to an official sprint micro USB cable didn't help, even after reboot. I finally removed the battery, put in a fully charged one, swapped cables with external charger and the one with the phone, used a HTC charger for the external charger, and the phone didn't complain. Wtf?! Is a battery dying or use the latest official ROM f ing up? I've never seen this on any of my previous Samsung phones ever!