iOS 4

Zitat

(...)
Part of the confusion with multitasking comes from Apple’s excellent implementation of “task switching”. When you double-tap on the home button and start another application, the previous application is “frozen” and put into a state where it’s not running but can be restarted quickly. A part of the freezing process also reduces the amount of memory being used: allowing more applications to fit in freezer.

The next time you tap on the app’s icon, it is “thawed out” and put back on your iPhone’s screen while the previous app is frozen. This process is repeated each time you launch an app.

This sleight of hand makes it feel like you’re running many more applications than you actually are. It also explains how your iPhone can continue to have great battery life while you interact with many different apps. Most of your apps will be frozen and not using power: only the app on your screen is active. And even with audio, phone or GPS apps that are running in the background, you won’t be using more than one of those at a time (go ahead and try to listen to Pandora and the iPod apps at the same time!)

Hopefully this short explanation helps you understand that the developer of your favorite app isn’t being lazy about doing refreshing in the background! If you feel strongly about this situation, the best thing you can do is give Apple some feedback.

Zitat von defe

ja. man braucht ein frisches original iOS4 am iPhone, redsn0w (neueste beta) und die iOS 4 GoldenMaster, weil nur die kann von redsn0w bearbeitet werden.
zuerst mit itunes ganz normal iPhone wiederherstellen mit 4.0 und dann redsn0w drüberlaufen lassen.
nach dem boot cydia updaten lassen und ultrasn0w installieren.

Zitat von d3cod3

man sollte zwischen multitasking bei den hacks und dem von apple unterscheiden. das eine ist eben ein hack und lasst einfach alles laufen, das andere ist so gemacht dass es zwar einschränkungen hat aber dafür von der performance problemlos hinhaun sollte (auf den unterstützten geräten).