Quote:
Originally Posted by dijk182
I have WiFi and Push on, but have had them on for almost a year and haven't seen this happen yet. Besides the battery running low, the phone is also warm when it happens (warm like when I've played a game on it for a bit), but nothing is running in the foreground.
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The first time I took an iPhone to Macworld Expo (before we had third-party apps), it quickly drained its battery and got very warm while it was just sitting in my pocket.
After recharging, I experimented and discovered that the culprit was Wi-Fi: once I turned off Wi-Fi, the phone stayed cool and maintained a charge all day. My theory is that it was confused by all the Wi-Fi signals to choose from on the show floor (none of which I could actually use), and kept bouncing around trying to pick one.
Since then, I've generally left Wi-Fi off except for places/times where I know I can use it, and I've found my battery life to be much better.