Sorry for the late reply to this---I prefer to have the phone off when it is charging. I have found with airplane mode and charging the battery that I still have to shut the phone down for everything to work the way it is suppose to after charging it all the way. There used to be a battery screen that would come up. Even if I turn the phone off all the way and then plug in the charger, it starts the phone up. I don't really call that a feature per say, I would say this is a bug. From what I read on another forum, it is something that they are aware of. I may be one of a few, but I don't want to leave my phone in airplane mode. My phone doesn't really take that long to boot up, but if I have to reboot the phone after putting it in airplane mode--what's the point?? Plus---to fully charge a phones battery, you must turn the phone off. If the phone is left on at all--even with the screen off, it creates a trickle charge and constantly having a charge put on the battery which in the long run can weaken it faster.
Facebook
Twitter
Instagram