iPhone 7 System Stuck with Voice Memo Can not Work

Share:

iPhone 7 System Stuck with Voice Memo Can not Work

 

Malfunction Phenomenon

iPhone 7 system stuck, when clicking on an APP icon, the APP responds slowly. Voice memo can not work with the red icon on the interface is grayed out, also there is no sound when playing the ringtone.

 

C66 1

Trouble Shooting

Ringtone can’t work with voice memos function abnormal, which means the audio circuit is abnormal. Audio IC U3101 related to this issue.

 

iPhone 7 System Stuck

 

Then we remove Audio IC and measure the diode value of the U3101 bonding pad. We found the diode value on pad C12 was “OL”, which indicated that the relevant line was disconnected. According to the circuit diagram, we know that pad C12 is connected with pad BV65 on the CPU via R1103.

 

C66 3

 

C66 4

 

 

 

 

 

 

We tried to jump a wire to connect pad C12 and R1103, and put back the Audio IC get the motherboard and display assembly, press the power button, and test again, all function back to normal, problem resolved.

 

 

iPhone 7 System Stuck with Voice Memo Can not Work-1

 

iPhone 7 System Stuck with Voice Memo Can not Work-2

 

 

 

 

 

 

 

 

 

 

              

iPhone 7 Repair Course

Share:

REWA Academy

As an enthusiastic educator and expert in mobile technology, REWA Academy has dedicated its career to empowering individuals through technical education. With a keen focus on cellphone repairs, they have developed comprehensive online and offline courses at REWA Academy. Their expertise spans a wide array of areas, including iPhone repair training, phone hardware, software, and advanced troubleshooting techniques. Through their writings, they aim to demystify mobile technology complexities, making it accessible and understandable for both novices and professionals in the field.

Advanced Phone Repair Course

Do you aspire to become a professional in the phone repair industry? If so, visit REWA Academy to learn in-depth phone repair from industry experts.

Leave a Reply

Your email address will not be published. Required fields are marked *

RELATED Articles

How to Fix the iPhone 12 Pro Max Touch Not Working

How to Fix the iPhone 12 Pro Max Touch Not Working

When your phone’s screen becomes unresponsive, the usual solution is to replace it. However, screens are quite expensive these days. In this article, we will introduce an alternative method of...

Samsung A53 Won’t Turn On Repair

The Samsung A53 model is widely recognized as one of the most desirable smartphones currently available. However, like all electronic devices, it is susceptible to occasional operational issues that may prove...

Use the Vivo T1 In the Rain and Won’t Turn On

The client uses the Vivo T1 in the rain and won’t turn on after that. Let’s see the detailed troubleshooting and fixing process. Model: Vivo T1 Announced: 2021, October 20 Defect...