Case name: OPPO-R819T broken screen can not boot recovery

Customer Name: Some mysterious person

Phone model: OPPO-R819T

Figure 1 This OPPO-R819T was smashed and the screen was severely broken.

Fault phenomenon:

The OPPO R819T mobile phone screen is broken and cannot be turned on normally. The mobile phone saves important pictures, videos, recordings and contacts and needs to be restored.

After the user consulted Das data recovery online, the engineer suggested that Ms. Zhang can first try to change the screen at the mobile phone repair office. If it is smooth, there is no need to do data recovery, and the cost is relatively small. One day later, the user still found the Darth Data Recovery Center, saying that there is no way for the mobile phone repair shop. The maintenance personnel told the mobile phone to fall too seriously. When changing the screen, the chip needs to be changed at the same time, and the data may be cleared. In order to ensure data security, the user decided to entrust the Data Recovery and Forensics Center to extract data.

Data recovery and forensics process:

1. The current state of the mobile phone: The top right corner of the screen is severely broken, and the boot screen is mostly black screen. Only the lower left corner has a white highlight flashing state. USB debugging is not turned on, no root privileges.

2. Because the mobile phone has been completely repaired at the repair point before, in order to confirm whether the memory chip has been replaced, the Darth data recovery and forensics engineer decided to open the mobile phone to view, as shown in Figure 2 (the red box is the OPPO R819T mobile phone) MTK memory chip). The chip did not find obvious traces of desoldering and should not have been disassembled or replaced.

Figure 2: OPPO R819T uses MTK memory chip

3, the next job is to find a way to get the memory image of the phone. Since the mobile phone can still be turned on, the method of desoldering the MTK chip is temporarily slowed down, and the mobile phone assembly is restored, and it is preferred to obtain communication with the computer through the data line.

4, due to serious screen damage, the touch screen has completely failed, Darth data recovery and forensic engineers with a lot of practical experience, through the volume button addition and subtraction and power combination keys to operate, and finally entered the recovery mode, as shown in Figure 3.

Figure 3: OPPO R819T enters the REC mode with the experience of Dash Data Recovery and Forensics Engineer

5, using the Darth mobile phone data recovery and forensics software professional version extraction, and perfect recovery of the data users need. As shown in Figure 4.

Figure 4: Dass Mobile Data Recovery Software Professional Edition successfully extracted data

Technical difficulties and suggestions to customers: The difficulty of this case lies in the experience of data recovery and forensic engineers. If the chip is judged to be faulty, it may cause secondary damage, affecting the success rate of data recovery and forensics. After user verification, all data requested by the user is successfully restored.

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