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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. This page aims to help users troubleshoot, fix, and seek help for the iPhone 4.

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Limited/Poor Wifi Not detecting

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Wondering if you could help

I have a Iphone 4 that does not detect any wifi routers until you bring the phone right next to it

Now i repair iphones day in and day out, but this has got me stumped

I have changed the black EMI shield, the little metal clip is there the screw is tight enough etc etc

Phone has been restores ive even tried connecting a direct solder piece but nothing seems to work

Any suggestions or advice would be most appreciated

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2 Comments:

Hi

Thank you for your reply

As mentioned i repair these day in and day out but im totally stumped by this

I have tried restoring resetting and even jailbreaking but unfortunatley nothing seems to have done the job

Any ideas from the more experienced technicans please?

Regards

Ali

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Did you check to make sure your blue inductor is still connected and working?

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Hello

A reset network might help you

or try to restore with iTunes

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Since you've opened your phone it may also be a hardware issue.

The very long screw at the top above the flex cables, which is located between the power button and aux input may be the culprit. That screw is used to adjust the signal strength. Loosen and tighten it checking the phone signal every time accordingly and play around with it until you get the perfect signal.

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1 Comment:

The very long screw in the top of the upper EMI shield fixed my issue. I had taken the EMI shield off to troubleshoot a screen display issue. I left the shield off while I reconnected the screen cable, resulting in no WiFi detection. I put the shield back on with the one screw and magically my WiFi network was detectable.

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