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Chapter one No Service, No Calls and Wi-Fi Problem

by vicky Yong share iphone repair tool
iPhone 6 Plus WiFi still works but has weak signal. Trouble Phenomenon WiFi can be turned on, but the signal is weak. It has no signal when being away from the router
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  • After power on test only one or two WiFi hotspot can be found and the signal is weak, but trouble-free iPhone can search more than ten hotspots. Therefore, the trouble can be considered as weak signal
  • After disassembling(), the WiFi chip() is found to be replaced. In order to test whether the chip is workable, using an accessory antenna() to replace the peripheral() antenna circuit() o
  • Turning on iPhone again after finish the above steps, many WiFi hotspots can be found now
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Review on Chapter one No Service, No Calls and Wi-Fi Problem

iPhone 6 Plus WiFi still works but has weak signal.

Trouble Phenomenon

WiFi can be turned on, but the signal is weak. It has no signal when being away from the router.

Repair Process

After power on test only one or two WiFi hotspot can be found and the signal is weak, but trouble-free iPhone can search more than ten hotspots. Therefore, the trouble can be considered as weak signal.

After disassembling(), the WiFi chip() is found to be replaced. In order to test whether the chip is workable, using an accessory antenna() to replace the peripheral() antenna circuit() of the chip. The way is to use a 10cm enameled wire() acting as antenna starting from C5213_RF near WiFi, as shown in below picture 1-1.

Picture 1-1

Turning on iPhone again after finish the above steps, many WiFi hotspots can be found now. At the same time, the signal has been normal. This is mainly because the WiFi signal filter FL_CELL_WIF_RF has been damaged. But the removal of filter has no effect on the iPhone operation. In the case of repair, we often use the enameled wire directly ignoring the filter.

As is shown in the PBC picture 1-2.

The material object picture of placing the enameled wire is shown in picture 1-3.
After smearing the enameled wire with green oil and assembling test, the signal becomes normal. The trouble is removed.

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About vicky Yong Advanced   share iphone repair tool

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Joined APSense since, March 23rd, 2017, From shenzhen, China.

Created on May 22nd 2017 04:04. Viewed 438 times.

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