Professional cellphone repair guide and high quality cellphone repair tools

Sometimes, when we use a cell phone, there is a situation where the volume key reacts slowly . A  customer sent us an iPhone 6S Plus. The fault described was that the iPhone was disconnected. When the iPhone was turned on, the screen was blurred. After the iPhone was replaced, the touch boost IC was displayed. The   iPhone display   returned to normal. However, the iPhone volume buttons do not respond when they test the iPhone. In this situation, how should we solve it, according to the following steps to easily repair the volume key  which  does not respond to the problem. Now we need to test the iPhone again. Press the iPhone volume button , we found that the volume increase button does not respond, the volume down button and mute button are normal, compare the diode data to see if it is normal. Picture is as follows. The 4th pin of the J4701 socket is the volume up button. The diode data is measured with a Fluke 15B +   digital mu...

The i Phone 7 speed is slow, so a user tries to update the IOS to accelerate it, IOS updates VIA iTunes, the iPhone won't start, it stays on the Apple logo, sometimes automatically restart. Connect it to computer and flash it to the latest IOS, computer will prompt flash has been completed, but the iPhone interface, still unable to reach the activation and always show white Apple. When your iPhone gets stuck at the Apple logo and does not boot up completely, It triggers a mini heart-attack. But it's not all that serious and can be fixed without any difficulty. So, what could be the reason behind the Apple logo stuck error?  A simple way for you to solve this problem 。 Let's try them out! Use DC power supply to test IPhone the power current is stuck at around 150mA. Touch the iPhone home button, it have response, the flash can be completed normally, which means that the iPhone booting condition is normal. Remove all iPhone external accessories, and then tes...

The SIM card is a phone card that is used to make a call. If your phone does not recognize the SIM card, it means that your mobile phone is a game console and you cannot call. Normally, all mobile phones can recognize the SIM card, but if When you encounter a phone that does not recognize the SIM card, how can this problem be handled? the client sends an iPhone 6 Plus .According to his description, the main mistake is that the card can't be recognized after inserting in the  Phone 6P card slot . This failure is usually caused by a mobile phone SIM card slot.How to test and repair the damaged section? The iphone opening toolkits can help to disassemble the iPhone 6 Plus.It is prefer to use a digital multimeter to measure that ground value of the SIM card slot.it is found that the SIM card slot 1 pin PP_LDO5 is short circuit to the ground. As shown in Picture . . After connecting the WUXINJI Dongle on the computer, ob...