1. XyresicPsych's Avatar
    Anyone else notice this? Been paying attention to it, and when wake up my i4, it re-connects to WiFi.

    Try it out and see what results you get.
    07-15-2010 11:58 PM
  2. big9erfan's Avatar
    When the iPhone locks/sleeps wifi turns off. This is nothing new.
    07-16-2010 12:00 AM
  3. XyresicPsych's Avatar
    Right but when iOS4 was released it introduced persistent wifi, and it worked for me, when I took the iPhone out of sleep it was already in wifi but no longer.

    EDIT - confirmed on both Apple's website and a chart on pocket-lint.
    Can't post the links as I don't have 10 posts, but I do know for certain it worked on 4.0 and there is proof of it.
    Last edited by XyresicPsych; 07-16-2010 at 12:08 AM.
    07-16-2010 12:02 AM
  4. big9erfan's Avatar
    Ha. I never noticed. I have 4.0 ( not 4.0.1 yet ) and watch my wifi turn off and on with sleep/wake. I wonder if it's a setting somewhere.
    07-16-2010 12:07 AM
  5. Jellotime91's Avatar
    That's not true. It introduced this only for iPod touch.
    07-16-2010 12:07 AM
  6. big9erfan's Avatar
    According to the Apple knowledge base it is on the iPhone 4, 3GS and iPod 3rd gen. http://support.apple.com/kb/DL1058
    07-16-2010 12:10 AM
  7. XyresicPsych's Avatar
    From apple's site -

    Persistent WiFi connection to receive push notifications*

    Then, at the footnotes,
    * Requires iPhone 3GS, iPhone 4, and iPod touch 3rd generation.

    As I said, can't post links but if you google "what will you get from ios4", it's the first link, shows persistant wifi on 3GS, 3G, 4, 3/2gen touch.
    07-16-2010 12:11 AM
  8. sting7k's Avatar
    Never noticed my iPhone 4 holding wifi when asleep either, had the same behavior as my 3G.
    07-16-2010 12:16 AM
  9. chobbs1's Avatar
    This is why I have not yet upgraded. Thanks for posting this
    07-16-2010 12:19 AM
  10. jakej914's Avatar
    Persistent wifi is still working for me on my iP4 with 4.0.1
    07-16-2010 09:28 AM
  11. jakej914's Avatar
    That's not true. It introduced this only for iPod touch.
    Definitely not iPod Touch only. Worked on my 3GS running 4.0 and my iP4.
    07-16-2010 09:30 AM
  12. macharborguy's Avatar

    if persistent wifi IS working for you: did you do a clean start, rather than a restore?

    if it IS NOT working: did you do a restore from backup, rather than a clean start?
    07-16-2010 10:04 AM
  13. isuquinndog's Avatar
    Persistent wifi did not work for me before on iOS 4 and still doesn't after going to 4.0.1. I have a 3GS.
    07-16-2010 10:47 AM
  14. AGreenGiant's Avatar
    There no problem on my 3GS for my 4.

    Very strange indeed.
    07-16-2010 11:45 AM
  15. jakej914's Avatar
    Persistent wifi worked for me on 2 restores from backup, and 1 clean install.
    07-17-2010 12:47 PM
  16. touchyphone's Avatar
    I dont think I ever saw it work on 4.0 or 4.0.1 on my iP4....
    07-17-2010 03:22 PM
  17. bste's Avatar
    As long as you know you have wi-fi, how about if you have Wi-Fi "on" in the network settings, and turn cell data and 3G "off" in the settings. The phone then can't revert to 3G. You'll have persistent wi-fi, even if it's because of the settings (of course, you'll need to go into your settings and turn cell data and 3G "on" when you want or need them). [Iphone 3G, ios 4.0.1 here]
    Last edited by bste; 07-17-2010 at 06:59 PM.
    07-17-2010 06:52 PM