I have an iPod touch 4G on iOS 6 beta 4. In iOS 4 Apple introduced persistent wifi for iPod touch. Well it's not persistent for me. When I'm using the iPod touch, you can see the wifi icon on the status bar. Once I lock my iPod and click on the lock button again after a minute, the wifi icon is gone and comes back after 3 seconds. This is not persistent wifi. In iOS 5.1.1, whenever I press the lock button, I see the wifi bars even after an hour. What happened? One more question. I receive iMessages late on iOS 5.x and iOS 6. I get the notification 10 minutes to 1 hour late. What is the problem? Is it my iPod or apples servers? It shouldn't come that late. When my friends tell me something that in should reply by 10 min, I reply after 1 hour since I get the messages late. Is there any Cydia tweak that will leave the messages app in background even after I remove it in the multitasking bar like FaceTime.