Best Way for iPhone 6 WiFi Fault Repair

WiFi question usually will be attention more than other abnormal. The next phone we will repair has the weak WiFi signal which means iPhone 6 Wi-Fi Module can't work normally , we need to find a better solution for this question as we have repaired a similar one. Like the following picture show:

14-5-1

Test whether the main power supply 4.2V has been delivered on C5202_RF, if not, it can be supplied from any place with main power supply, or directly replace WIFI module.

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Before disassembly, we need to do some protection to avoid blowing other chips. The WIFI module is surrounded by glue. We must first preheat and remove the glue, and pay attention to small components, especially small resistors. you must to solder it again if some of the components are lost.

The WIFI module on line is relatively thin, do not use solder iron back and forth on iPhone solder pad, testing resistance again after cleaning.

As shown in figure 14-5-3, the lower right-hand corner is easy to break, and the normal is infinite. Therefore, it is necessary to measure whether it is connected to the external connecting elements, if not, it's necessary to solder jumper wire.

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There are two kinds of WIFI modules in the market: high temperature and low temperature. We use low temperature and control at about 240 degrees, then install to test the iPhone device. First use the DC power supply to add electricity, Generally if IC involved in the main power supply circuit, do not directly use the battery to boot after replacing IC as to avoid the motherboard burning, after replacing chip, the fault is solved.

If you encounter WIFI can be opened, but only found a small amount of signal, this problem belongs to the WIFI signal, the forty-fifth pin takes main factors, after removing WIFI which can be observed under VGA 7-45X Trinocular Stereo Microscope  .