Do you know how to close a frozen application manually on your iPhone?
Do you know how to optimize your limited memory with shutting off useless running programs?
Attention, please! Especially for iPhone beginners.
Force-quit is the only way to make a badly behaving or just plain frozen iPhone application close. It’s very simple and very useful in several situations.
To use force-quit, when you are in an app that seems to be frozen or is just acting too flaky for your liking, simply hold down the Home button for a little over 5 seconds. You will not get any message or confirmation on screen as to what you’re doing, but you’ll be back to the Home screen when the force quit is complete.
Force-quit can also be useful if you’re concerned about certain apps continuing to leave certain processes open and chewing up a bit of your available memory (as in RAM memory that programs run in, not storage memory that music and photos etc are stored in). These are generally only Apple’s own apps – like Safari and Mail – that have any ability to do this. You might want to force-quit them if you’re looking to free up as much memory as possible before running a game or just to give them a full shutdown to help get past an issue you’re having with them.
As a reminder, if you’re running one of the iPhone OS 3.0 beta versions 1-5, you will not be able to use force-quit – for some reason it has disappeared from these betas.
Force-quit sometimes may be out of work. At that situation, if your iPhone is frozen up, the only way you save it is to do a hard reboot. Hold down the Home and Power buttons for a period of 10-20 seconds or more until you see the iPhone’s screen go black and the Apple logo appear as the start of its reboot process.
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