The Brief Introduction Of MacBook EFI Unlock Process

In this article, we will briefly introduce the EFI unlock process of the Macbook. Main Applications (when we need to unlock the EFI?) Long time no use, forget the EFI password Buy a secondhand Macbook but the EFI password has not been told Principle Clean the EFI data stored in the BIOS chip. And the […]

Xiaomi Mi A2 No Charging Issue Repair

Defect Phenomenon Today let’s see the Xiaomi Mi A2 no charging issue repair process. Received a Xiaomi Mi A2 (also known as Mi 6X. Relased on 2018, July.) with charging issue. And the left down corner with crack damage, phone might get drop damaged. The defect phenomenon is no any charging current when connected with […]

iPhone XR Can Not Start Up Caused By Drop Damage

Received an iPhone XR can not start up caused by very serious drop damage. When the phone get received, we can see the phone do get very very serious drop damage, the screen get totally cracked. Normally like this kind of drop damage, the no boot/no display issue with a high chance is caused by the […]

iPhone 11 Repair Cases

Released 2019, September 20. The earliest users of iPhone 11 have used the phone for more than 2 years, and there are also more and more defects happens. In this article we gonna share some iPhone 11 repair cases, to see how the phones get fixed. <Image: GSMArena.com> Case 1. Keep Rebooting Defect Phenomenon: after […]

How to Use the Bitmap For Cell Phone Repair

The cell phone repair industry is thriving. We can live by repairing, even make big money to become the millionare. And the excellent handwork skill and very good repair logic is required for the cell phone repair. Sure, you can repair by experience, but to know why and how can make your repair work more professional […]

iPhone 11 Pro No Service And Network Issue Repair

Defective Phenomenon Received an iPhone 11 Pro no service and keep searching network issue. The issue happened during normal use. Troubleshooting Double check the issue, the defect phenomenon is the same as customer described. Insert another SIM card to test, no signal and keep searching. Dial the *#06# and the IMEI number can be displayed.  […]

iPhone 6s Cannot Make Phone Calls

Defect Phenomenon An iPhone 6s with water damage, and when connected with 4G network  the iPhone 6s cannot make phone calls normally. Troubleshooting Normally, when we make phone call with 4G network connected, there should be 4G signal bar displayed on the screen. But this phone displayed nothing on the signal bar. Since it’s a […]

iPhone Backlight Issue Repair Process

For the iPhone series, below models with backlight integrate with screen. iPhone 6 series (6/6P) iPhone 6s series (6s/6sP) iPhone 7 series (7/7P) iPhone 8 series (8/8P) iPhone XR iPhone 11 (* the earlier models will not be introduced here) In this article，let’s share the basic repair process of the backlight issues like no backlight, […]

iPhone 6s Drop Damage And Cannot Start Up Repair

Defect Phenonenon Received an iPhone 6s with drop damage, can not start up. And try to connect with DC power and start-up, CPU get extremly hot. Troubleshooting First, since the phone is get damaged. We should check the cosmetic of the motherboard. Disassemble the phone and check the motherboard under the microscope. Crack signs are […]

iPhone 6 Repair Common Faults Sharing

iPhone 6 was Released in 2014, September 19. Even through by now with more than 7 years passed, some iPhone 6 are still in use. And also still with a high repair demands in the market. Here, we gonna share some iPhone 6 repair common faults based on the motherboard chip level. PP_VDD_MAIN C5202_RF The […]

How to Repair Cell Phone?

Every second there are phones get damaged! Our phones are easily to get drop damaged, water damaged or just stopped working without a sign. Let’s see how to repair cell phone briefly. First of all, ASK! Ask the client how the phone get damaged? For different situations, the repair processes are different. For water damaged […]

iPhone 6s Can Not Start Up with 50mA Current Leakage

Malfunction Phenomenon Received an iPhone 6s with boot issue from customer.Try to press the power key button to power on, the phone cannot be booted and check the DC power supply with 50mA current leakage. Troubleshooting Process First, we should have some basic idea about the boot process main related chips and components.  Just similar […]