Last week, Apple revised a support document about iPhone temperature to include the iPhone 3GS. The June 25 document cautions iPhone 3G and iPhone 3GS users to operate their handsets within acceptable temperatures. It makes the following recommendations:
Recommended operating temperatures
Operate iPhone 3G and iPhone 3GS in a place where the temperature is between zero and 35 degrees Celsius (32 to 95 degrees Fahrenheit). Low or high-temperature conditions might temporarily shorten battery life or cause the device to temporarily stop working properly.
Recommended storage temperatures
Store iPhone 3G and iPhone 3GS in a place where the temperature is between -20 and 45 degrees Celsius (-4 to 113 degrees Fahrenheit). Don't leave the device in your car, because temperatures in parked cars can exceed this range.
Symptoms of overheating
- iPhone will no longer charge
- iPhone display will dim
- Weaker cell signal
- iPhone temperature warning screen appears (see below)
(Credit:
Apple, Inc.)
According to the support document:
If you don't have an option for Notifications in the Settings menu, then you don't have an app installed that supports notifications.
An app needs to be used at least once before it will receive any notifications.
The iPod Touch can receive notifications any time when the screen is on and Wi-Fi is connected. If the screen is asleep, the iPod Touch will check every 15 minutes for a notification.
You can disable notifications for an app in the Settings menu
If you restore a backup to your iPhone or iPod Touch, you'll need to use an app at least once to get notifications again.
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