I've always left my phones charging overnight, with the supplied charger though, not some unknown ebay junk.Yes , exceptionally clever things . I'm constantly amazed at their capabilities , indeed I use mine as a constant reference manual for all things - and it's never failed me so far . And also , as a bonus , you can actually make and receive calls on it , a basic quality that we sometimes forget . I've always shut my phone down at bed - time , just something I've always done . Perhaps I'll look into leaving it switched on in future in restricted mode . BTW , is there any reason , safety-wise perhaps that I shouldn't leave it plugged in overnight on charge ?