iPhone 4

Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White.

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iPhone 4 wifi signal issues greyed out

I replaced the lcd and digitizer on an iphone 4 after successfully installing the front panel i tried to connect the phone to wifi and there is not wifi networks available. The wifi setting is disabled (grayed out) unable to make a selection for the wifi.

Any ideas or suggestions as to what may have caused this and what is the best remdy for this problem.

I have tried to reset the network settings but that did not help, my next attempt will be to update the firmware hoping that may resolve the issue, however i strongly feel that this may be a hardware issue.

where is the wifi antenna located in the iphone 4?

If anyone has has this similar problem please share your experience with me.

Answered! View the answer I have this problem too

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according to the teardown for iphone4 "Apple has integrated the UMTS, GSM, GPS, Wi-Fi, and Bluetooth antennas into the stainless steel inner frame." the teardown also notes that there "are pressure contacts on the inner face of the rear panel which look like they are for an antenna"

it doesn't actually identify the wifi component

go back and clean the frame and inner rear panel-check for defects, scratches etc. it may not work, but it's worth a try.

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there are all sorts of references to cleaning metal to metal contacts as oily residue may interfere with wireless function. I'd open the phone and clean clean clean

by pollytintop

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If Settings shows Wifi as grayed out ("No WiFi"), then the WiFi chip on the main board is bad and you will have to replace the whole main board.

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hi I reopened and found out the couple of screws were not in he right place as their are many screws of different sizes I just rearranged the screws according to the ifixit guide and it worked out perfectly.Thanks for your reply.

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You rearranged the screws according to the ifixit guide? Where is this guide? I am looking for it all over and I can't seem to find it. Thank you.

by Juan Mejia

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if you have no wifi the gold antenna at the top is most likely damaged

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try checking the gold antenna at the top of the board, it needs to be connected to the middle housing for the wifi to work, also the screws are important because they act and pathways for the circuit board

by Krayzee

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Good News Everyone! After I had spilled water on my device about a year before and I got the same problem: my wifi was greyed and bluetooth was not working either on my iPhone 4. I tried all possible solutions:

1. Airplane on, turn the iphone off, turn the iphone on, turn airplane off, and then wifi was supposed to start working. BUT not with my device(

2. Freezed it for 30 min in a plastic bag. BUT it was a time waste.

3. Then settings-general-reset network settings/all settings. BUT it didn't work.

4. Eventually I diassembled my iPhone 4, removed all 5 screws from wi-fi antenna (NB: pay special attention to 4.8 mm screw, as it is supposed to be the primary reason for wifi bad performance), cleaned all these screws and all metal-to-metal contact points on the connector cover with a de-greaser. Then reassembled it

AND WI-FI APPEARED!!!

Thanks to ifixit)

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I dropped my iphone 4 in water. It didnt even completely sumbmerge in it but not my wifi is grayed out and wont work. What do I do?

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Where is this screw your talking about? I know I have some missing

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on wifi antena on iphone 4 where does each screw go because i have 5 and they are diffrent sizes and im not sure wich one goes where please help asap thanks

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Not long off the phone to apple as my wifi was greyed out

And what they told me to do was add other user account on my laptop and try

Reinstalling latest update via iTunes and presto wifi back hope this helps others out there

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Mikey w:

How do you add other user account on the laptop? On iTunes?

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Hello everyone I have an iphone 4 16GB white. So, you see it had a broken screen we fixed the screen I fixed the screen. The first time I fixed it but I couldn't put back the back cover so I putted the cover on and then pressed. The second time I fixed it i put the screen back on and I ordered a new back cover for it so, as I was saying, it worked so I restored it and it said (error 21 ) so I checked what was (21) it was the battery connector I fixed it and it worked but you see when I open the phone to answer those question that they give you the phone didn't ask me the wifi so when I opened the phone I tried the turn the wift on from off and it's silver no one can press anything so please tell me my prom lie and how to fix it ASAP.

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I had this issue with my iPhone 4.

I attempted all the suggestions, reset, replacing dock flex and standard Antenna, Freezing, heating, turning it on airplane mode and do not disturb and none worked for me.

I FIXED THIS ISSUE by cleaning the gold contact at the top left of the motherboard and also cleaning the section of the Chassis which it contacts onto. I used Contact Cleaner however I believe any moisture will work provided it is allowed to dry in time.

Good luck to all those with this issue.

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Can you produce a guide or be a little more specific? Do you need to remove the wifi antenna to get to these parts that need to be cleaned?

by AndrewGeorge

look at this photo, the gold connector to antenna is the section which contacts to the metal chassis. http://www.brianklug.org/wp-content/uplo...

by Kai

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Akber Jesani will be eternally grateful.

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