My iphone cannot find wifi networks !

[kakubaba]

I am using an unlocked iphone 3g 3.1 for few days. One day for some reason i switched my iphone to "airplane mode". now Even if my airplane mode is off , my phone cannot detect my wifi network. I have tried it with other wifi networks but , it just does not detect any network. I am really worried . Please help ?????

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[bebedag]

Same with mine..that is hardware failure. You must bring back to shop where you bought and sweep with new one like mine.

To proof that it a hardware malfunction :
Turn off iphone, Wrap iphone with plastic then put in freezer about 5 minutes after that you can see WiFi will appear for about 1 minutes

[babyblue_pimp]

what the hell? put your phone in the freezer for 5 minutes? lol, i'm pretty sure if you run the phone under a steady flow of water it will reactivate the wifi as well. hahaha i'm just messin with you.

But yeah for a real hardware test, do a clean restore up to 3.1.2, if you have wifi your good.

If you don't have a official carrier sim to activate the phone, downgrade to 3.0 and use redsn0w to hactivate and see if your wifi is working.

[kakubaba]

I just upgraded to 3.1.2
But still my wifi is not working .
I have already tried re set.

Not since i dont have wifi or edge i cannot install cydia , snow from blackrain app. My phone is locked.

Please guide my what to do now. I am sure i have never dropped my iphone , so why is my wifi not working ???

Please heeeellllppp ??

[shadow25]

Does no one know how to search?

Hint: reset network settings..

[kakubaba]

already tried reset ! but that too not working

[bhz1]

just on a hunch, but try this:
Hard reboot iPhone (press and hold the home key and power key together until screen goes blank and the boot screen is displayed then release)
Enable Airplane mode
Enable wifi airplane mode will turn off and note that wifi still might not enable)
Press the home key and return to the settings menu
Enable Airplane mode
Disable Airplane mode
Enable wifi

Another thing you could try would be:
turn off wifi
turn on airplane mode
turn off iphone
turn on iphone
turn off airplane mode
turn on wifi

Play around a bit with stuff like this before resorting to restoring.

[kakubaba]

Tried switching on and off airplane mode on and off and mixing it with wifi ........ but still no clue.??

One thing i noticed is when i switch wifi on the clock(searching icon) show;s curcling for 1 sec then dissapper, and then i kept my phone ideal for anout 10 sec then again i saw the searching icon for 1 sec ....... but again it disapeer.