Apple has contacted a number of users about the problems that Pocket-lint reported as afflicting the iPhone 3G following the 3.1 update. The company has got in touch with 11 followup questions asking about their settings.

Most are about push email, Wi-Fi, Bluetooth, and various apps, but question ten asks: "When you notice a power drop, does it seem to be a legitimate power drop, or rather an issue with the battery icon indicator?".

Users are also being asked to install a bit of software that enables battery life logging on the phone, which are then sent back to Apple when the user syncs their handset. Apple has recommended that users don't go more than a couple of days without syncing thanks to the size of these files.

Meanwhile, we're hearing that other users are having issues with their handsets since the most recent update. Some are complaining of their handsets switching off randomly on a daily basis, and others are having problems with the accelerometer.

Are these, or any other problems, afflicting your iPhone experience? Let us know in the comments and we'll keep on top of what's going on.