Mobile Phone Data Clearing Method: How To Completely Delete Mobile Phone Data To Prevent Privacy Leaks

Nowadays, the speed of smartphone replacement is accelerating. Many users will replace their devices with new ones within a year of use. They either give their old phones to family members or sell them on second-hand platforms to make money.

In this process, the most easily overlooked detail is the various private data retained in the mobile phone. If it is not cleaned thoroughly enough, it is very likely that it will be extracted by those with ulterior motives using recovery tools, which will lead to the risk of account theft and fund leakage.

Many people think that a factory reset and formatting is considered complete. In fact, most common formatting actions only add a deletion mark to the storage sector, and the original data stored can still be restored to its original state by professional tools.

Completely erasing data to this extent has become an indispensable and safe step before selling an old device.

Manual file overwrite to clear old data

The storage of old mobile phones is almost the same as the data recovery logic of computer hard drives. As long as the data is not completely overwritten by newly written content, most common data recovery software on the market can re-extract photos, chat records, and document files that were deleted in the past. The risk of information leakage is very high.

The operation logic of manual overwriting is to take advantage of the feature of the storage medium that "new content can overwrite old sectors", so that the storage space that originally contains private data will be filled up with invalid files that are meaningless. In this way, when subsequent recovery tools are used to extract, all that will be obtained will be these useless redundant contents.

In actual operation, you can first perform a complete formatting operation, and then copy invalid files such as large videos and compressed cache packets to the mobile phone until the system prompts that the storage is completely full and there is no remaining space. Then perform a format again and repeat the overwriting two or three times to basically erase all the original private content that can be recovered. This operation is suitable for users who do not want to install additional third-party tools.

Mobile phones use cleaning software to shatter privacy

Currently, the storage capacity of mainstream mobile phones on the market has reached 64G, 128G or even higher. Manually searching for a sufficient number of large files to fill up the entire storage is indeed quite time-consuming and consumes a large amount of download storage resources. However, it is convenient and much less labor-intensive to use third-party cleaning tools to shred files.

You can always see regular cleaning apps like 360 ​​Clean Master, QQ Manager, and Android Clean Master, all of which have the ability to hide and destroy private data.

Take Android Cleaner Master as an example. After installation, first perform a basic system garbage scan, click on the "Power Clean" category on the page to find the privacy cleanup entrance, and wait for the software to scan all privacy caches and residual fragmented files retained by the entire machine. When the scan is completed, the interface will display all recoverable files detected on the entire machine. To restore private data entries, you only need to check all target files that you want to completely destroy, click the shred option at the bottom of the page and wait for the process to be completed. After completing the operation, exit the software normally. Files marked for shredding will be overwritten with random fragments written directly to the corresponding sectors. Ordinary recovery tools basically cannot restore them in reverse.

Connect to a computer and use a powerful deletion tool

If you need to perform targeted cleaning of some important confidential files, and you want your operations not to affect other retained basic content, you can also connect the mobile device to the computer, and after confirming that the driver installation is in a normal state, use the computer resource manager to directly access the shared file directory inside the phone.

At this moment, the 360 ​​File Shredder installed on the computer desktop can directly call the right-click menu function. You only need to right-click on the target private file, then select the "360 Powerful Delete" option, check the "Prevent Recovery" option in the pop-up function window, and then confirm to start the shredding process. The software will repeatedly perform random data overwriting operations for the selected single or batch files.

This method does not need to occupy all the storage resources of the entire phone, and is much more efficient when performing fixed-point processing. It is also suitable for users who usually connect to a computer to back up data.

In addition to the storage on the mobile phone body, these sets of operating logic can be fully applied by clearing sensitive data from portable storage devices such as memory cards and U disks that are commonly used.

Under normal circumstances, in addition to completely destroying relevant data before changing hands, you must also develop good privacy protection habits during daily use; for example, avoid casually connecting to uncertified public wireless networks; do not casually enter key account payment passwords in unfamiliar third-party applications; in this way, you can reduce the possibility of privacy information being leaked from the source.