Professional cellphone repair guide and high quality cellphone repair tools

Recently, some users have reported that the iPhone 7 Plus camera sometimes cannot be used normally.  We also encountered such a situation. Our client sent us an iPhone 7 Plus, he reflects that the front camera of his iPhone 7 Plus can't work normally, but the rear camera, flash and other functions are all normal.How to repair it? If your cell phone is also in the same situation, you should first test it before it is repaired. The following is the repair steps. 1. Enter in to the system to have a test. Use iPhone 7 Plus opening tool kit to disassemble the mobile phone and remove the motherboard to test. We observed the repair traces of front camera J4503 base. It means the iPhone 7 Plus was repaired before. As shown in picture. 2. There is no any problem when we use Fluke digital multimeter to measure the ground value, when measure the voltage of the 2 groups of I2C that were repaired: (R4810) I2C_NH_SCL_CONN and (4811) I2C_NH_SDA_CONN, we found R4811 resistance has n...

Recently, many iPhone users have reported that the iPhone 7 WiFi is unstable or dropped. What caused the problem? How to solve it? We Received a iPhone 7 with WiFi function failure, the customer is very anxious and unwilling to wait, so how to repair it in a short time? As we all knows,iPhone 6, 6S WIFI fault repair case is common, the NAND chip is universal, So the iPhone 7 repair process should be similar to iPhone 6s. At beginning, the WiFi was unsuitable, so we directly replace a good one, and start to detect WiFi's MAC address. After installing the WiFi and reboot to test the address, we found there is no any problems. Then the next step is to remove the iPhone 7 NAND chip . As shown in picture. After that, put the NAND chip on WL PCIE programmer to unbound WiFi. As shown in picture. WiFi unbound is successful after installing to test, but the WiFi can not be turned on. Where is the problem? It's the same situation after reflashing the iPhone. In t...

Many users report that the iPhone 6 Maps App can be located, but it is not real-time navigation, positioning points can not be updated in real time.Why does this happen? How to solve it? Our vip fix team will repair it step by step. The iPhone can be positioned, but the location coordinates don't move when the navigation route, this failure may be caused by signal instability, or the GPS signal channel problems. First test the iPhone 6, open the Maps App, the location coordinates is not updated when navigating, and it always in the same place. Disassemble the iPhone by phone opening tools , remove the iPhone motherboard. Open the WUXINJI Dongle to check iPhone schematic diagram, the GPS signal through some switches to the U_WTR_RF RF IC and then to the iPhone baseband CPU, as shown in picture. Some small switches are covered by black glue, so we're not consider this factor first. Because it was first passed through the U_WTR_RF RF IC and then to the iPhone ...

If you are a loyal user of iphone, then you certainly know that iphone will also become hot and the temperature will become very high. I believe many iPhone users have encountered the situation that "iPhone needs to cool down before you can use it." When using the iPhone, the high temperature of the phone sometimes happens, especially in summer. Why does the iPhone get hot? What can we do to solve or alleviate the serious problem of iPhone overheat? In this article our vip fix shop team will introduce some solutions. The main causes of mobile phone overheat are as follows: 1. Run a high-energy-consuming App: If you play 3D games, play videos, and transmit large amounts of data, the CPU will continue to operate at high loads. 2. Play games or call while charging: The mobile phone battery is inputting and outputting sideways, which not only results in double power consumption, but also may cause damage to the battery performance. It is better to avoid this behavior. ...

As we all know, itunes is a powerful management tool of Apple's official. It has many functions, such as playing music, video, downloading apps, synchronizing and backing up mobile phones, managing iPhone devices, refreshing firmware for iPhone, etc.Many iPhone users report that their iPhone can not connect iTunes. When we encounter such a problem, how should we solve it? In this article, our VIP fix shop team will provide you with the most complete solution. Troubleshooting hardware First, make sure that the data cable used to connect the phone to the computer is genuine, because the copycat data cable will cause iTunes to detect the phone. Some cottage data lines can only be used for mobile phone charging, but they cannot connect with iTunes. If it is a cottage data line, please use the original iPhone data cable to connect the mobile phone and computer. If the data cable is genuine, you still cannot detect the phone. Try replacing the USB connector connected to the co...

With the ever-increasing size of iOS systems and apps, I believe many iPhone 6s 16GB users have already faced a situation where the mobile phone has insufficient storage space. In this case, most users will choose to delete the APP or clean photos, songs, files to solve the lack of storage space. But this does not solve the problem fundamentally, so there are many users directly replace the higher-capacity new iPhone. Apart from that, is there a better way to solve this problem? The answer is yes! In this article,our vip fix shop team will give you a new idea about this problem. Disassemble iPhone First, Disassemble all screws with professional teardown tools. Take out the iPhone’s mainboard. Use the hot wind to help remove the original glue around the 16GB hard disk. After removing the glue, please keep using hot wind to heat the 16GB hard disk.When the time is up, please pry off the 16GB hard disk. After taking out the 16GB hard disk. Use WL PCIE NAND Flash Memory Chi...

For our mobile phone users, we may have experienced the situation that the cell phone cannot be charged. Every time the cell phone cannot be charged, we maybe anxious and upset,and not have a good way to solve this prickly problem. If the phone can't charge, it's tantamount to a brick for us. What causes the phone to fail to charge? How to solve it? Today our vip fix shop team will share with you some simple and feasible ways to solve this problem. Restart cellphone It may be that the phone system is malfunctioning, causing a problem with the battery level. This kind of problem is the easiest to solve. Direct shutdown and restart to solve the problem caused by a part of mobile phone software, and then insert the charger, you can basically charge. Check your cable and charger The cheapest part is usually the cable. If they bend too much or are improperly fabricated, these may cause the phone to fail to charge.Also, the charger failed. This kind of failure is the main ...

iPhoneX uses a new design, equipped with a sharp color OLED screen, and an upgraded camera, unlocks the phone using a 3D FaceID sensor, and supports AirPower wireless charging. But no matter how good the phone is, it will inevitably appear some failures. When the phone appears some common faults how to solve? Today, our vip fix shop team will bring you some iPhone X repair tips. iPhoneX screen is too yellow Many friends bought the iPhone X and later discovered that the iPhone X screen is so yellow that it is difficult to accept. Because the iPhone X is equipped with the True Tone Display color display technology, in the indoor environment such as dim light, the screen will automatically adjust to yellow to make the visual more comfortable. If you find the iPhone X screen is yellow, you can turn this feature off in Settings - Display and Brightness - Original Display. Force restart iPhone X In many cases, forcibly restarting iPhone X will solve any problems you may encounter...

iPhone 5s fingerprint recognition can be used to turn on or control the phone by fingerprint, but some people encounter the situation that fingerprint function or touch ID not working. Why it happen? we need to repair iPhone fingerprint part. First of all, we need to check iPhone 5S fingerprint schematic diagram in WUXINJI Dongle , there are three 3 sets of power supply circuits mainly, they ware 1.8V, 3.0V and 16.5V, the 1.8V and 3.0V are available after booting. When press the iPhone power button, the 1.8V and 3V can be measured on the fingerprint socket by Fluke 15B+ Digital Multimeter , and can be measured on the interface J7. The 16.5V cannot be measured at ordinary times, it can only be measured when the finger touch the iPhone home button to add a fingerprint or when unlock iPhone with fingerprint. There are two cases of fingerprint failure, one is failed to open the "add fingerprint" icon, and the other one is "add fingerprint" icon can be opened...

Has your iPhone been overcharged? Do you know what's going on? It is a very common problem that mobile phones can't charge. So why can't mobile phones charge in? What should be done after encountering such a situation? The following is the case that we successfully repaired the iPhone5 and cannot be charged. The charging part of iPhone 5 is made up of Q2, U2 and U7. As shown in picture, the circuit diagram of the charging port J7 can be inquired on the WUXINJI dongle The 5V voltage sent from the tail plug passes through the Q2 to send two 5V power supply. PP5V0_USB_PROTECT and PP5V0_USB_RPROT were sent to U7 and U2 respectively. In addition, there are two detection pin in the middle of the battery contact J6! they pass through FL10, FL11 respectively and send to power IC-U7, FL10, FL11, in actual cell phone repair, it is found that the 2 pins are very easy to fall off, causing the cell phone can not be charged! and keep reboot again and again! If there ...

Sometimes our mobile phone will have an error code. Although it is not common, I believe many iPhone users must have encountered an error code while using the phone and do not know what this means. Perhaps searching on the site for a long time, you may not find a satisfactory answer. What are the meanings of various iPhone error codes? Why do these error codes appear? For iPhone users to quickly find out and understand the reasons. The following is a list of the different error codes you may have on the iPhone or iTunes. Based on our vip fix shop team interpretation of their meanings, you can be sure to find the appropriate instructions to resolve them. iTunes error codes: 13, 14, 1600, 1601, 1602, 1603, 1604, 1611, 1643-1650, 2000, 2001, 2002, 2005, 2006, 2009, 4000, 4005, 4013, 4014, 4016(USB Connection Problem) You will get the error message: "invalid response," and being asked to restore again after a restore completes. These iTunes error codes are caused by...

In the industry of consumer electronics, Apple has always been known around the world for its exquisite design and high quality. Making it popular with many consumers. Even if the best mobile phone is used for a long time, there will be some faults, iPhone is no exception. If it is damaged, maintenance costs are not cheap. If a part of our cell phone is broken, can we repair it by ourselves? The answer is yes! Today our vip fix team will introduce how to replace iPhone 5s screen. Whether the screen is broken or the screen LCD touch screen is broken, the only solution is to replace the entire screen. Before starting repairs, professional iPhone repair tools must be prepared.the following tools will help you. 1. iPhone 5s screen 2. iPhone opening tools 3. Metal spudger opening tool First, turn off the iPhone 5S 's power. You need to turn off the device and remove the SIM card tray before opening the phone. Step 1: Remove the iPhone 5S back plate: Use a Pentalobe sc...

iPhone is getting more and more outstanding, and can install a lot of software, which makes it popular with consumers. Especially the Siri left a deep impression on us. Siri is a voice control function that is specifically designed to run on Apple devices. When you don't want to make the complex click operation, Siri can help you to do some simple operation. Such as tell jokes, set alarms by voice, send text messages, introduce restaurants, set schedules, check weather, search web pages, etc. Recently, some iPhone 6s users report that their Siri is not working. How to repair it? Today, our vip fix shop team will share some skill to solve this problem. Make sure connected to the Internet First, make sure your devices is connected to the Internet.Check Settings> Touch ID and Password, then scroll down to "Allow access when locked" and make sure "Siri" is enabled. Another way to turn this feature on in iOS 11 is to go to Settings> Siri & Search...

In daily life, we often use mobile phone cameras to take pictures and record beautiful moments. The camera is a very important part in our lives.If the camera is broken, it will bring us a lot of inconvenience. So how to repair  iPhone 5S camera? This article will provide you with the best solution. No matter the iPhone 5 or iPhone 5S, the camera problem is basically a power failure, which is caused by the corrosion and pseudo welding of the base, also the inductance of channel is corroded and fall off. The following picture is the basic structure of the rear camera circuit. Let's take a look at the iPhone 5S power supply part shown in the WUXINJI circuit diagram . For the L29, L30, L28, FL43 components, it is easy to cause no power supply after water corrosion, the problem can be solved by short connection, U210 and U13, the two small glass IC also easily damaged cause no voltage output, it can be short connected as picture. Be careful not to use hot air gun ...

Recently, some iPhone5 users complain that their iPhone has no sound. why it happend? How to repair it? We are going to repair iPhone 5S audio part issues in this article. The audio part is made up of iPhone audio IC -U21 and ringtone amplification IC-U22. 1. If there is no any voice on iPhone 5S, first we need to check each power supply on U21 circuit whether they are normal. If there is a voltage is abnormal, we need to handle it first; if all voltage works normally, then re-install or replace the U21. 2. If the receiver has no sound （normal call mode）, replace the receiver and flex cable, check the channel of the receiver, check short connection for FL51 and FL 51, re-install or replace audio U21. 3. If your voice can't be heard （normal call mode), replace the iPhone tail plug flex cable, check the microphone channel, check short connection FL49, check if C222 and C333 are dropped or replaced, re-install or replace audio U21. Furthermore, after make the phone call...

When people use mobile phones, more or less will encounter the problem of no service. It is believed that many users will meet signal problems when using mobile phones. In the same place, other people's iPhones are full of signal. Your own iPhone is "no service". iPhone 6s no service how to do? There are a number of situations that result in an unserviced iphone 6s, here our VIP FIX shop team will introduce some of the commonly used processing methods. Common no service situations 1. SIM card is damaged or SIM card is not placed properly will cause the iPhone no service. 2. May be the iphone system errors cause the phone display no service. 3. If you're in signal blind area, it is normal to have no service. For example, in the lift or in some very remote corners, there will be no service. 4. Sometimes iOS upgrading causes the error. 5. Maybe there is something wrong with the hardware. The iPhone6 has no service solution 1. you can try to restart the i...

When using a mobile phone, it is inevitable that some problems will arise. Recently, many people have found that the phone is always unable to detect the SIM card, such as invalid SIM or no SIM card installed warning. We need to fix it step by step. Frist,Power down iPhone, re-install the SIM card on iPhone SIM card tray , turn it on again and then test it, the iPhone doesn't read or identify SIM card properly. Second, check iPhone SIM cart circuit diagram on WUXINJI Dongle , the SIM card schematic diagram as shown in picture. Then, as you can see from picture, The failure with the SIM card is related to the following several aspects 1. SIM care protection tube (it can be removed and not install) 2. SIM card tray is deformed and damaged. 3. The iPhone baseband CPU or baseband power supply is virtual welded or damaged Last, If the iPhone 6 or iPhone 6 Plus fails to identify the SIM card 1. Use Eject Pin to eject the SIM card tray, and then tack it off to ch...

What should I do if my cell phone can't charge? As we all know, if our phone can't charge, it is useless to us.How to repair an iPhone 6S with abnormal charging fault ? Read this article you will found the answer. First we need to know its working principle. Open the WUXINJI circuit diagram , we can see that the PP5V0_USB (5.0V) sent from the charging flex cable is through the tail socket to the iPhone 6s charge IC, all the way through the protection tube Qx and send to USB control IC, as shown in picture. If there is problem of abnormal charging situations: 1. Power is less and less while charging 2. It can not be charged in turn-off state 3. unrecognized USB, etc. Solution: First of all, use Fluke digital multimeter to measure whether there is 5.0V voltage (PP5V0_USB) next to the charge IC and the USB control IC. If these two 5.0V are available, then replace the charging IC and USB control IC. If there is 5.0V (PP5V0_USB) next to the charge IC (PP5...

Touch ID is Apple's fingerprint identification technology. Touch ID can not only protect your iPhone, but also allow you to easily unlock your phone with a fingerprint. But if your Touch ID doesn't work, you won't be able to use fingerprinting on your phone. Have you ever encountered a failure of touch ID? For this phenomenon, it is not easy for you to operate your iPhone. Our VIP FIX Shop Team will provide a solution for this problem. Touch ID doesn't work on the iPhone In the following 6 cases, you need to enter the password instead of Touch ID: 1. Restart the device 2. The fingerprint has not been recognized for five consecutive times 3. The device has not been unlocked for more than 48 hours 4. Just registere to add or remove fingerprints 5. If you are trying to open Touch ID and password in the Settings menu 6. If the "password required" in the access restriction is set to "immediately" Solve the Touch ID ...

Today's smartphones, there are lots of parts are required to put into the cell phone body. It's used a lot of glue to stick together, and it's basically hard to disassemble. So the first thing you need to do is to understand and learn how to assemble a disassembled smartphone in the right way. If you don't know the right way, then you will never be able to diagnose or solve any problems that affect your phone. Each mobile phone has a different way of dismantling, especially in the area of smart phones. Therefore you need to have the correct knowledge about the disassembly of the smartphone; otherwise you may damage the device. In this article, our VIP FIX shop team will show you how to dissemble an iPhone 6s, and the professional  tools you need. Before you start repairing and removing your mobile phone, make sure you have all the necessary mobile repair tools. The tools you need are as follows. 1. Opening Toolkit  is professional-grade cell phone repair tools ...

Have you encountered this situation? iPhone 6 thermometer fault after turning on. iPhone thermometer appears on the screen because the phone temperature is too high. How to repair it? The following is a successful repair case. We Received a iPhone 6 from one of our customers. After turning it on, the thermometer was displayed on the screen. And it reports "iPhone needs to cool down before you can use it". As shown in picture. Before formal repair to the iPhone 6 device, we need to have a test on the fault. 1.Open and contract the WUXINJI circuit diagram, we use the regulated DC power supply to clamp the electricity for a test, we find the start current is normal, there is no leakage electricity or big current condition. 2. When we detect the thermistor, we find that the component is missing. 3. Apply some solder paste and use QUICK hot air station to disassemble a thermistor with same value from a discarded iPhone motherboard. 4. Observe the welded ther...