Hello, love the forums! I have an EVO 4G, seriously loved it until the OTA Gingerbread. Sadly my battery life seems to have been adversely affected. I used to be able to get almost 2 days on one charge, now I only get about 8 hours. Nothing else changed other than the OTA, my phone has never been rooted and I keep it stock without many apps. Its just very weird to me... decided to join the forums to see if I could get more information, but from what I can tell by reading, the majority of people are pleased with the battery life after the OTA Gingerbread push. Well, just wanted to introduce myself....thanks to everyone at AndroicCentral, love the site 
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