When you use your iPhone to connect to WiFi but there is an Internet access error? It could be an issue with your operating system settings or even related to iPhone hardware. We tried some solutions, such as resetting the iPhone, restarting the iPhone, restoring the iPhone, but none of them work. Now, we will use a step-by-step guide to help you solve the problem of iPhone 7 WIFI failure by repairing iPhone hardware.
Disassemble the iPhone 7. Use screwdrivers to remove the iPhone screws next to the iPhone lightning port, put iPhone 7 on the CPB Screen Heating Pad for heating.
After a while, use sucker to open the iPhone display screen, disconnect the iPhone battery and iPhone motherboard, and then remove the iPhone display assembly and take out the iPhone motherboard.
After checking the iPhone motherboard, we found the iPhone motherboard is a bit deformed, the iPhone motherboard is curved, especially the location of the iPhone WIFI. Therefore, we suspected the iPhone WIFI part is damaged.
Remove the black glue next to iPhone WIFI IC. In order to remove the iPhone WIFI IC, first we need to remove the black glue around the iPhone WIFI module IC. Use QUICK 861DW hot air rework station to heat black glue, and then carefully use Qianli tweezers to remove the black glue.
In this part, we should pay more attention, because it's easy to damage the small components or layer board circuits next to the iPhone WIFI.
Remove the iPhone CPU cover shield on the back of the WIFI. Because removing WiFi requires a hot air gun to pry it down at high temperatures. The back side of the iPhone WIFI has a front camera seat, iPhone small audio IC and CPU. The iPhone small audio IC and iPhone CPU all was covered by glue.
After removing the iPhone CPU cover shield, you can use apply some high temperature resistance tape to protect the iPhone CPU.
Remove the iPhone WIFI IC. Use QUICK 861DW hot air rework station to heat the iPhone WIFI IC, and insert the graver blade to pry the iPhone WIFI IC gradually.
After removed the iPhone WIFI IC, we can see that some pins are dropped on the solder pad, it's caused by pressure.
Put iPhone motherboard under the microscope, we can clearly see that iPhone WIFI part of the pressure is severe, there are a lot of pins have dropped off. And there are 4 pins on WIFI are dropped off. We are going to replace it with the new iPhone WIFI IC.
Remove the iPhone Nand flash to untie the WIFI. Take off the iPhone Nand flash, use JC P7 programmer to program the iPhone Nand flash to untie the WIFI, and then install the iPhone Nand flash back the iPhone motherboard.
Install the new iPhone WIFI module IC to the iPhone motherboard. After installation, we can assemble the iPhone 7.
Finally, power on iPhone 7, test the iPhone WIFI function, the iPhone WIFI button can turn on smoothly, and the iPhone WIFI function works properly. The iPhone 7 WIFI failure has been fixed!
There is no unique answer to the Wi-Fi connected but no Internet access issue. The above tips should be able to fix most of the hardware related problems. If you have other questions about iPhone repair, please contact us, we are happy to answer your questions.