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April 30, 2015
Inherited iPhone 4s from my wife - she upgraded to a new phone because weak battery and wifi not working. At that point I thought "what's there to lose, let's fix it"
The repair went fine, about 2.5 hours from start to finish. As others here have reported the wifi antenna could probably be replaced without taking the logic board out - but for a first-timer that would be even trickier. All repair steps went fine. Battery life much improved but even after resetting and restoring the phone no wifi or bluetooth. Double-checked connections. Problem must be somewhere else.
Good work light. Work on a white surface. At every step put the little screws somewhere where you can separate them and mark each one - an egg carton was suggested here. Don't take too long of a break between disassembly and putting everything back together. Makes it easier to remember.
April 13, 2015
Wi Fi not working - greyed out switch and frustrated daughter using large amounts of 3G data allowance!
Straightforward repair as I had all the tools from a previous repair (my wife's 4S broken front screen).
I followed the 'reflow chip' repair from an iFixit member and removed more parts than necessary. I should have followed the Upper Antenna Replacement guide which would probably have been easier - once I realised where the wi-fi module was - it was a very easy swap & rebuild. Great part & service from iFixit as ever - Wi Fi working perfectly = happy daughter & lower data bills!!
March 12, 2015
My iPhone 4S's wifi greyed out and could not connect to home wifi. The cellular part and bluetooth worked fine but not wifi. So I thought replacing the wifi antenna might fix it.
Also I thought while I have the phone opened, I might as well replace the battery at the same time.
The disassembly was fine. I took my time (approx 1 1/2 hr) carefully removing all the screws and parts needed to reach the wifi antenna. I had it laid out in a manner which I could remember where every parts/screw goes. The instructions were very helpful.
The re-assembly was much faster.
I was really nervous when I turned back on the iPhone but to my surprise, it turned on just fine, just as before! (I was afraid of possible short circuit or somehow not connecting something correctly.)
HOWEVER, the repair DID NOT fix my problem. The wifi antenna is still greyed out so this leads me to believe the problem is not the antenna itself, but with the wifi chip (which is all part of the logic board). I'm not going to replace that as this is a spare phone and I'm not spending any more money on this.
After taking my phone apart and putting it back together, I have no more fear of doing repairs myself.
My advice for anyone attempting this is to be sure to take your time, be organized, don't rush, and lots of patience.
wifi and bluetooth were not functioning properly
both were greyed out
went very well following the step by step directions and keeping the various screws and fasteners lined up and organized
Take the time necessary to follow the instructions very carefully and you will successfully get the the non functioning bluetooth and wifi curcuits working again.
Bluetooth and Wifi would not work.. reflow of the chip was necessary as there is a design flaw with the chip..or the assembly process
following the step by step was simple and easy well documented. Used a larger heat gun and thermally protected the other chips on the logic board
Take the time necessary and work precisely and the success and a fully functional IPhone 4s will be yours!
October 29, 2014
My problem was that my Wifi on my iphone 4S was grey... So i decided to open my Iphone 4S and replace the Wifi/Bluetooth antenna with a *new* one! From Ifixit! And it really works! It works like a charm! Really good! very good quality though !
The repair was really NOT difficult.. You just have to open your back case. And screw of the vises that you need to unvise. You do NOT need to take all the parts of.. Only the part where it's located in your phone.
My advice is to look very good what your doing! I mean by that... Be focused on your work you do on your phone.. Because if you miss one vise.. It could ruin your phone... So be patient, and put all the vises and parts on a small magnet board that you can purchase here on Ifixit!