Can the old mobile phone be restored to the factory?

In fact, the address book, SMS, photos and other information deleted by the old mobile phone can be recovered! What is the safest way to deal with it? What should I do to cancel my mobile phone number? Please see the most comprehensive treatment strategy below!

Old mobile phone, this is the safest way to deal with it.

0 1. How did the old mobile phone information leak?

1. Ordinary deletion or factory restoration cannot erase data. When the system deletes a file, it is only marked as "deleted", that is, the default data of the system has been deleted, but the stored data itself still exists, but it is only in a rewritable state.

2. The top information can be easily recovered without new data operations. Because the data on the hard disk can be overwritten repeatedly, data recovery can only read the information overlaid on the top layer. Photos, address books, etc. What has just been deleted will be restored.

02. Once this information is leaked, it is very risky!

1. User name, ID number and mobile phone number.

This is the information that criminals are most concerned about. Through this information, we can get some login names and passwords of users' login accounts. Once the data is successfully recovered, the consequences are unimaginable.

2. SMS, address book

After restoring the address book and SMS, the scammer can get the social relationship of the owner and pretend to be the owner for fraud.

3. Photos and videos

Self-portraits or videos are exposed on the Internet, or they may be restored and spread at will, or even blackmail users.

4. Online banking or third-party payment software

Use the identity information contained in the mobile phone to report the loss of the Sim card, and then reset the bank or Alipay payment password to steal the balance.

5. Social apps such as WeChat and QQ.

After recovering the data, log in to WeChat and QQ directly, cheat the owner's friends, or blackmail the user according to the chat record.

6. Trade secrets such as mail.

After the data is restored, you can log in to the mailbox directly to check the mail, and the important information and trade secrets in the work mail are leaked.

03. The old mobile phone is the safest way to deal with it!

1. After the important data is backed up, restore the factory settings or format the mobile phone.

2. Access some irrelevant content or large files (such as movies, useless pictures, etc.). ) to fill the storage space of the mobile phone many times.

3. Install a "file shredder" on the mobile phone to completely erase it, or go to a regular mobile phone recycling agency or maintenance center to ask professionals to completely destroy the mobile phone data.

4. If the mobile phone has a memory card, try to put the private files in the memory card. When changing a mobile phone, just take out the memory card and plug in a new mobile phone.

Never throw away your mobile phone as domestic garbage.

6. The safest way is not to store important personal information in your mobile phone.

04. Don't forget to cancel your mobile phone number.

1. Unbind Alipay account.

Login to Alipay account → Click account settings → Basic information → Mobile phone → Unbind.

2. Unbind the WeChat account

Log in to WeChat and select "Me" → Settings → Account and Security → Mobile phone number → Select the menu in the upper right corner → Unbind.

Unbind the bank card

Generally, it can be untied through online banking professional edition or bank counter, and at the same time, the business numbers of bank cards such as U shield, online banking, mobile banking and SMS notification can be changed.

4. Change other account login settings

Replace the mobile phone number bound by social accounts such as Weibo;

Replace the number bound by shopping websites such as Taobao;

Change the mobile phone binding number on the mailbox;

Change the relevant business numbers of securities and fund accounts;

Change the mobile phone number of common websites such as 12306.

05. Old mobile phones can also turn waste into treasure.

1. car navigator

An old mobile phone with GPS function, and then buy a car bracket and a cigarette lighter power supply, just install the navigation APP on the mobile phone and download the offline map, and you can become a car navigator.

2. Remote monitoring

Idle smart phones can download monitoring software and connect the picture of another mobile phone through wifi, so that the old mobile phone can be used as a monitor at home.

3. Universal remote control

If the old mobile phone has infrared emission function, you can use the mobile phone to control large and small household appliances as long as you download the software and find the product model of the remote control device.

4. Document scanner

Download the corresponding scanning application to the mobile phone, and you can convert the picture into text. If you usually have a lot of documents to deal with, turn your old mobile phone into an office assistant!

5. SLR camera

An old mobile phone with an adapter and a SLR lens can be turned into a simple version of a SLR camera.

6. Automatic burglar alarm

The self-made mobile phone anti-theft alarm system consists of infrared detector, mobile phone number confirmation circuit and dialing circuit. First, the mobile phone number is stored in the modified mobile phone. When the bad guy enters the house or the car starts, the system will immediately dial the entered phone number to remind you to take preventive measures.

7. Driving recorder

The driving recorder on the market costs thousands of dollars, and the old mobile phone needs only tens of dollars.

8. spare alarm clock

Using an old mobile phone as an alarm clock can play a double insurance role when the mobile phone is out of power.

9. File storage

Nowadays, mobile phones generally have a large built-in storage space, which can not only save files, but also be used immediately.