Tidbits claims to have witnessed “unusual battery drains” and a check on Twitter turned up a number of claims of low battery levels since the update to iOS 6.0.2. Comments on the Tidbits story also suggest that people are suffering increased battery drain on their devices.
It is thought that the battery drain issue is connected to WiFi. The iOS 6.0.2 update was said to fix a WiFi bug although some users experiencing problems with WiFi have had trouble installing the update, according to reports.
The battery life claims are, as yet, untested however.