This morning dirty flash my Bigxie V2 to V3 for Android 4.1.1 and tested with 3G on, battery life kinda sucks
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I use stock kernel ( whatever in V3 ), quite little screen time ( around 1 hour ), listen to music for almost 2 hours. On screen mostly just to check-in foursquare as wondering around PC fair n low yat n t.square, GPS off, wifi never on.
Hence decided to try on Android Revolution HD 6, freakin awesome. When i thought project butter on JB was smooth, then ARHD 6 just show me the true butter experience. Swiping through app drawer with my fastest ever swipe and there's no lag at all.
Need more ppl to test and provide input on this.
Had to use for whole day tomorrow to report on batt life and/or stability ( if got issue ). Confirmed that youtube app cant use, however there's always m.youtube in browser.
I just thinking to try revolution, since you said youtube got issue, will wait the issue fix first. Jelly Belly rom so far so good.