Often I will realise my iPhone or iPad is about to run out of battery, run around the house looking for a charging cable and plug, and get back just in time to see the screen go black and the little spinner appear.
If I plug it into a wall socket it takes about 3-5 minutes (it shows the red battery with power symbol below) to turn back on, but if I plug it into my laptop it understandably takes longer.
Occasionally once it has finally powered back up the battery percent will be more than 1%. Why hasn't it turned on ASAP?
Also if I plug the cable in less than a few second after the screen goes to the spinner, why does it take so long? It just had enough power to function fully, and now I've given it all the power from my socket, how can those few seconds make such a difference?
More importantly is there anyway to try and force the device to come back on quicker? (e.g. If your phone is dead and you plug it in because you need to phone 911) it would be nice to know even if there is way to force it to turn on only to the emergency phone screen, and not the full functionality?