How to deal with the engineering mode that appears on the Lenovo phone S720

Ways to exit Safe Mode:

1. Press and hold the power button for more than 11s;

2. Turn off Fast Boot (Settings - Power - Fast Start - Cancel), enter the engineering mode (restart the phone, press and hold the volume down button + power button), and select Fast Boot - Powerdown (volume key adjustment + power button confirm).

Have you accidentally pressed the volume button (or photo button) + power button to enter the project mode, it just prompts "Enter the project interface, long press it will turn on normally......"If it's this place, you can let go of your hand and hold down the power button to get in.

If you have already entered the project mode interface with a lot of English words, then use the volume button to select reboot, and then click the home button (or power button) to confirm that you can reboot into the system.

If it still doesn't work, you can directly buckle the battery to restart and try, if every time you turn on the computer or still enter the mode, there may be a problem such as the camera button or the volume button is stuck or the system has a problem, it is recommended that you can take the time to bring the warranty card or invoice to contact the local maintenance site for further testing and processing. Inquire about authorized maintenance sites on the official website.

Due to the risk of flashing the phone by yourself, the failure of flashing will affect the warranty of your mobile phone, if the system is abnormal and cannot be effectively solved, we recommend that you can take the time to upgrade the system at your local Lenovo after-sales service center. You can log in to the official website to check the address.

Lenovo mobile phone engineering mode is designed for mobile phone designers, and it is not recommended for users to enter, and there is no information about entering this mode.

If you accidentally enter this mode, it may be the combination of the power button and the volume button that you pressed before, you can try to remove the battery to force it to shut down and restart it (if the battery is not removable, you can try to press and hold the power button for more than 8s, or operate the reset button of the device). Note: You can't press the phone's volume keys at the same time. If you turn on the machine many times, it will automatically enter the mode, and now you can enter it normally, and you can back up the important data of the fuselage, and restore the factory settings to see if it can be improved (ps:

Remember to back up your data before you do it to avoid personal data loss). If the problem is still there and you can't enter the system now, it is not excluded that the key is abnormal or the system is abnormal, and you need to send it to the repair station for detection and resolution.

Dear Lenovo users, hello!

According to your description, you have entered the project mode, you can use the volume keys to select the first row of English, that is, restart, press the lower left corner of the touch screen to enter English, and it will automatically restart.

1. First of all, turn off the mobile phone completely;

2. Press the power button first when the phone is turned off, and then immediately press the volume down button + volume up button at the same time and don't let go, and it will enter recovery after a while (press the volume up and down keys in recovery mode to select, and press the power button and home button to indicate OK);

3. After entering the recovery mode, select Factory Reset;

4. Select [Wipe Data Factory Reset], then press the boot button to confirm, and then select [yes - delete all data].

5. Then select [Reboot System Now] again, press the power button to confirm, and then start the phone.

The general machine of Lenovo mobile phone is in the shutdown state, and enters the engineering mode through the power button + volume up button.

Isn't it possible to press and hold the power button to turn it on?

Here's how:

1.After selecting reboot with the volume down button, press the power button, and it's good to restart.

2.Reasons for unintentional entry:

Due to the unreasonable design of the volume keys, sometimes you will accidentally touch the volume down button when you turn on the machine, and you will enter the engineering mode, when there is a G3 interface when you first enter, there is a prompt to press and hold the power button to start normally, and after a while, it has entered the engineering mode. Follow the above methods to exit.

Mobile engineering mode is a system-level security management software, which can view some parameters of the mobile phone.

By selecting the "touch" option, the screen will display a large rectangle and an "x" made up of many small rectangles, which we can trace with our finger or stylus to see if the screen is sensitive and responsive.

By selecting "Mega Cam" and "Front Cam", we can test the front and rear cameras of the phone to see if the image sensor is able to function properly. By selecting "speaker", you can check whether the speaker of the phone is able to emit sound properly, and so on.

If the boot is abnormal and enters the engineering mode, it may be that you accidentally pressed the combination of the power button and the volume button before, you can try to remove the battery to force it to shut down first, and restart it to see. Note: You can't press the phone's volume keys at the same time. If there are many times when the machine is turned on and automatically enters the engineering mode, it can now be entered normally, and after backing up the important data of the body, restore the factory settings to see if it can be improved (ps:

Remember to back up your data before you do it to avoid personal data loss).

Founded in 1984 by the Institute of Computing of the Chinese Academy of Sciences with an investment of 200,000 yuan and 11 scientific and technological personnel, Lenovo Group has now developed into a large-scale enterprise group with diversified development in the information industry, an innovative international technology company, composed of Lenovo and the former IBM Personal Computer Division. Lenovo mainly produces desktop computers, servers, laptops, printers, handheld computers, motherboards, mobile phones, all-in-one computers and other goods. Since 1996, Lenovo's computer sales have ranked first in China's domestic market; In 2013, Lenovo's computer sales rose to the world's No. 1, becoming the world's largest PC manufacturer.

On January 23, 2014, Lenovo announced the acquisition of IBM's low-end server business. On January 30, 2014, Lenovo Group acquired Motorola for $100 million**. Since April 1, 2014, Lenovo Group has established four new and relatively independent business groups, namely PC Business Group, Mobile Business Group, Enterprise Business Group, and Cloud Service Business Group.

In August 2016, the All-China Federation of Industry and Commerce released the list of "2016 China's Top 500 Private Enterprises", and Lenovo ranked fourth.