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No. I updated and jailbroke my Verizon iPhone 4 last night and the battery is no different than iOS 5.0.1. Getting about 4-5 hours of usage, not good at all. |
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Still good battery life here, on par with iOS 5.0.1 while 5.0.1 and 5.1 are a tiny bit better than 5.0. Never had any drain issue still. |
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Little to no difference on a CDMA iPhone 4 and iPad 1. |