I got a 10% battery warning last night then was just about to use my phone when it switched off. It then wouldn't let me turn it on for another 10 mins until charged.
I remember seeing an cydia app that would let you use it to 3% and that it would allow it to be switched on again after a 5% charge instead of 20%. I don't think these were what the app did primarily, just a nice added bonus.
Does anyone know what it's called?
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