Usually, when a phone encounters low battery and then tries to start up, the first thing the user should do is to either turn the phone off completely (by pressing the power button while it's starting up) or to plug it to a strong enough charger to prevent complete battery drain - completely draining a Li-ion battery is usually irreversibly damaging (i.e. killing the battery permanently).
Try leaving your phone undisturbed for at least 30 minutes. If that doesn't work, try using your powerbank (if you have one) - those things usually have an output higher than the default charger, that should give the battery a good kick start.
If those still don't work, then the battery may have just died (permanently) and the only solution is to have the battery replaced.
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10-08-2015 04:23 PM