Weak iPhone vibrate? Just restart

We're persistently surprised at how many iPhone troubleshooting issues can be solved by a simple power-off, power-on routine. If you've noticed that your unit's vibrate function is a bit weak, just turn the iPhone off by holding the sleep/wake button for several seconds, then sliding the slider. Power the phone back up by again holding the sleep/wake button, and you should notice a more robust rumble.

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