share some phone repair tools and iphone icloud unlock tool

When you IPhone 6S has no service and can search signal at times, but signal is weak. Most of the time, iPhone displays no service. Repair Process The trouble appears during the normal usage according to what customer says. This kind of trouble is common in iPhone 6S and iPhone 6S Plus- the damage of RF switch module gyro chip  . The material object of RF chip is shown in picture 1-44. It is useless to reassemble the RF chip. Instead, we should replace the RF chip. Picture 1-44  After teardown and checking the motherboard , we find customer shift capacitance C4112_RF near RF chip to other side, as shown in picture 1-45. After checking circuit diagram, we know C4112_RF belongs to frequency range B20, B26 and B27. This capacitance  does not have any effect on the usage of iPhone in China, so remove it. Picture 1-45 After replacing RF chip, power on and enter system to test. The signal is normal when inserting SIM card . The trouble is removed. The trouble of...

IPhone 6 Plus displays no IMEI when dialing *#06#. There is baseband firmware in “about iPhone”. And iPhone keeps displaying “is searching”. Repair Process Customer sends one board only. First assemble it to testing iPhone assembly and test. After power on, iPhone will display “no SIM card ” without inserting SIM card. If that happens, there is modem firmware in “about iPhone”(picture 1-40). That is to say, there is baseband. Picture 1-40 Numbers on the back of modem firmware suggests there is baseband CPU . There is not baseband, if without numbers. Input*#06# on the dial interface without inserting SIM card. If it is normal, the same IMEI in “about iPhone” will show up. If there is no response and IMEI after inputting*#06#, in addition, there is baseband firmware, so the problem cannot be caused by baseband. Displaying no IMEI after dialing *#06# is often caused by the two RFFE bus of baseband. There are four test points under NAND Flash , as shown in picture 1-41. Pic...

Trouble Phenomenon IPhone 6 Wi-Fi cannot be used, the Wi-Fi address in “about iPhone” displays “unknown”. Repair Process After testing, we find there is not any icon in “settings”, as shown in picture 1-31. Picture 1-31 After dissembling, we find the Wi-Fi chip  has been replaced and there are enameled wires under solder pad. Therefore, the improper enameled wires and unqualified working condition may cause the trouble. Remove the Wi-Fi chip directly and measure the diode data of each pin on solder pad. Comparing with normal motherboard , the measured data is normal. After removing Wi-Fi, the measured diode data of PCIE bus is infinite. We can only measure whether the circuit is connected between PCIE bus (as shown in picture 1-32) and coupling circuit C0703, C0704, C0705, C0706, C0720, C0721 (as shown in picture 1-33). Picture 1-32 Picture 1-33 We find the circuits between solder pad and coupling circuit C0704, C0705 are open circuits through measurement. Af...

If you apple 6 Wi-Fi switch is gray, cannot be turned on after dropping and hasn’t been fixed well at other repairing center.The following repair guide can help you out. Repair Process After teardown, we can see the Wi-Fi module IC chip    is stuck on solder pad by High Temperature Resistant Tape  . Tear the tape off and remove the Wi-Fi chip, we notice many pins dropped off from the solder pad, 18 in total. Among them, there is a empty pin that doesn’t need us to fix. Clean the solder pad and mend the 17 pins, painting green UV SOLDER MASK , as shown in picture After finishing the above steps, reassemble the Wi-Fi chip and power on. Test it and Wi-Fi can be opened normally. The trouble is removed.

IPhone 6 has a weak signal and cannot connect to Wi-Fi. Even if connected to Wi-Fi, it cannot surf the Internet. The Wi-Fi chip has been replaced. Repair Process After power on and test, signal cannot be searched with Wi-Fi switched on. After teardown the iphone by new Screwdriver opening tool Set  , we find the connection between the iron sheet and the Wi-Fi antenna is not doing well, as shown in picture 1-24. Picture 1-24 Wi-Fi signal can be searched with the well connection between the iron sheet and the Wi-Fi antenna swith . But the Wi-Fi signal is not stable because customer has already replaced the Wi-Fi chip  . First excluding the problems caused by Wi-Fi chip, we mainly measure Wi-Fi signal reception circuit. After measuring, we know capacitance C5133_RF is short circuit. The location of C5133_RF is shown in picture 1-25 and in material object picture 1-26. Picture 1-25 Picture 1-26 After replacing a new capacitance, turn on iPhone and test. The ...

The Wi-Fi switch cannot be turned on. The Wi-Fi MAC address can be found in “about iPhone” Repair Process: First teardown iPhone and then measure the diode data of Wi-Fi chip  and PCIE  bus communicating through CPU. The test point of PCIE bus is on the coupling capacitance that is on the right of U1501 , as shown in picture  The Wi-Fi chip cannot be removed when the diode data of PCIE bus is being tested. Otherwise, the diode data to Wi-Fi can be infinite. The circuits between Wi-Fi solder pad and the 6 capacitances often disconnect. If that happens, measure the ends of capacitance. The normal diode data is about 350 on one end and 500 on the other end. If the iphone backlight diode  data of the 6 capacitances is normal, then remove the Wi-Fi chip to measure the diode data of every pin of solder pad. If all the data is normal, first use a normal Wi-Fi chip to replace the old one and turn on iPhone to test. If the trouble is the still the same, it is cau...

IPhone 6 has call failure. Especially during charging, the signal disappears suddenly and the iPhone fails to call even with signal. Repair Process This kind of trouble is caused by two ways. One is the RF power supply Chip and U5411_RF. The sudden change of signal during charging is caused by the damage of U5411_RF or the working condition is not qualified. The material object of U5411_RF is shown in picture . First measure the diode data between the two power supply pins of U5411_RF and backlight diode of the RFFE bus. The measure location is shown in picture . When the probe of multimeter touch the L5408_RF inductance，the inductance becomes askew and becomes black at the ends of it, as shown in picture . Pull out the inductance and connect it with tin. Turn on iPhone and plug the charger into, the signal and dialing become normal after testing. The trouble is removed.

IPhone Wi-Fi cannot be turned on Disassemble after,we found the WiFi chip has been changed. First remove the Wi-Fi chip and then use multimeter to measure the diode data on the bonding pad, we can find the pin 26 and pin 28 on the Wi-Fi chip bonding pad are line-to-ground short circuit. After checking the circuit diagram ,we can know the self-output electricity of Wi-Fi chip powers the two pins. As shown in picture 1-9, it is abnormal to power a line-to-ground short circuit. Picture 1-9 By looking at picture 1-10, we know pin 26 and pin 28 only connect a capacitance C5201_RF and a inductance L5201_RF, so the only short circuit is C5201_RF. You can find the C5201_RF location by checking the PCB circuit diagram .as shown in picture 1-10. Picture 1-10 As shown in picture 1-11, we can find the C5201_RF material iphone motherboard in the PCB image. Picture 1-11 Remove the capacitance and then measure the iphone diode .The line-to-ground short circuit disappears. Wel...

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,At one end of the WIFI, fly a jump wire around 10CM to act as an antenna, as shown in below 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 o...

 iPhone 6 has no service regularly and no IMEI Guide Trouble Phenomenon IPhone 6 doesn’t have service and doesn’t show IMEI when dialing *#06#. Repair Process Checking “settings”→ “general” → “about phone” after power on，there is IMEI. But there is no IMEI when dialing*#06# at the dialing interface. Repeating power on several times, sometimes there is IMEI. This kind of trouble is called *#06# no IMEI. Usually, this is caused by the troubles of RFFE1 and RFFE2 serial of the baseband. The two serials are used by baseband CPU to control the signal chips. The place of RFFE1 is    ZXW DONGLE circuit diagram   in the picture 1-4 and in the circuit diagram 1-5                                                    picture 1-4 Circuit diagram(电路图) 1-5 Dropped iPhones have such phenomenon because RFFE1_DATA (picture 1-5)  Char...

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,At one end of the WIFI, fly a  jump wire  around 10CM to act as an antenna, as shown in below 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 n...

If your iPhone, iPad, or iPod touch won‘t turn on If your device has a frozen screen or doesn't respond when you touch it, or becomes stuck when you turn it on, learn what to do. From professional iPhone mobile phone repair official website:http://www.vipprogrammer.com If your screen is black or frozen If your screen is black or frozen, you might need to force restart your device. A force restart won't erase the content on your device. You can force restart your device even if the screen is black or the buttons aren't responding. Follow these steps: On an iPhone 7 or iPhone 7 Plus: Press and hold both the Sleep/Wake and Volume Down buttons for at least ten seconds, until you see the Apple logo. On an iPhone 6s and earlier, iPad, or iPod touch: Press and hold both the Sleep/Wake and Home buttons for at least ten seconds, until you see the Apple logo. If your device still won't turn on or start up Plug in your device and let it charge...

Trouble Phenomenon WiFi can be turned on, but the signal is weak. It has no signal when being away from the router. we can fix it all. Best quality, Best Service, Best Price http://www.vipprogrammer.com 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 10 cm enameled wire acting as antenna starting from C5213_RF near WiFi, as shown in below picture 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 th...

How to Fix iPhone 7 6S 6 showing Hardware Error, Learn more about the ‘Hardware Error’ or ‘software error’ error on the iPhone 7 6S 6, This post highlights the most effective solutions for Easily Check Hardware Error on iPhone 7 7 Plu If you think your iPhone 7 6S 6 is having some problems recently, here’s a quick way to identify if it has a hardware problem or not.from vipprogrammer.com. With iOS 10, Apple had built a ‘Diagnostics and Usage’ feature which compiles all software or hardware errors on your iPhone. This is a great feature that can help you identify your iPhone’s problem before it gets worse. Editor's note: learn more by reading our ebook on starting your own iPhone repair & unlock business How to Easily Check Hardware Error on iPhone 7 or iPhone 6 without Dismantling: Go to Settings > Privacy Scroll down to the bottom and tap on ‘Diagnostics & Usage.’ Tap on ‘Diagnostics & Usage Data.’ On this screen, you can see a list of error logs. The mo...