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I have an iPhone 4S and I charged my phone last night and unplugged it once it got to 100% then left it overnight for standby, it was around 98% and when I woke up, it dropped 20% down to 78%. when i checked my usage, my usage and standby times were exactly the same at 7 hours and 23 minutes. I powered off my phone and turned it back on, and it resumed as normally with the standby time usually being higher than usage. What made this problem happen?
I don't have an answer, but I am having the same problem. I turned my phone off as you suggested, and it seems to have helped. But I wonder if it is a permanent solution? Do I have to restart the phone every day?
My battery life is really poor and I wonder if this usage=standby issue is part of the problem? A quick search will show you a dozen other boards on the battery life issue. I searched through the first ten pages of one but there aren't many answers. (It would be nice if we could search within threads!)
I don't have an answer, but I am having the same problem. I turned my phone off as you suggested, and it seems to have helped. But I wonder if it is a permanent solution? Do I have to restart the phone every day?
My battery life is really poor and I wonder if this usage=standby issue is part of the problem? A quick search will show you a dozen other boards on the battery life issue. I searched through the first ten pages of one but there aren't many answers. (It would be nice if we could search within threads!)

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