the pre-iOS 7 one is my favourite, since it replaces the wallpaper with battery and makes it very obvious the phone is charging
there was a jailbreak tweak called battery doctor pro that adds some useful info on the charging lockscreen, i want it back
Sunshine@piefed.ca
Reverendender@sh.itjust.works
Mr_Wobble@thelemmy.club
dragontology@retrofed.com 1 day ago
This question gets a lot more complicated if you allow custom firmware discussion, e.g. of Android phones.
My Galaxy S3 had a nice one, but it almost certainly was not from the stock firmware. I remember a glowing ring that would fill up.