Why does the vivo3s520 phone I just bought have an old black screen of death

Hello! Sorry for the inconvenience, but based on your description, we recommend you try the following:

1. Click on the status bar of the mobile phone to accelerate (one-click cleanup) or enter the program management of the desktop to close the background program and clear the cache file to increase the available memory and avoid the black screen of death caused by insufficient memory.

3. You can go to Settings -> General More Settings -> System Upgrade ->Check for Updates Now-, according to the prompts**Upgrade package, click Verify and Install, the phone will restart and automatically enter the upgrade mode to upgrade your phone's system.

4. Try to clear the abnormal data through "Settings-> General More Settings> Factory Reset->Erase All Data". Note: This item will lose all the data stored on the user's mobile phone, including ** book, short message, third-party application software, and related information, and the data stored on the T card will not be lost.

Use with caution. (Note data backup).

Hello, often freezes the solution to this situation:

1. If there is a crash, I think the solution for everyone and me is to restart the phone, which cannot solve the fundamental problem.

2. Factory reset, this method is a more effective solution, but after the factory reset, the data in your phone will be lost, such as good themes, contacts, etc.

3. The resources of the mobile phone are limited, and opening n programs at the same time will cause the system resources to be exhausted and cause the system to freeze or crash.

4. Don't delete some system programs, especially with RE file manager, you don't know which one is useful and which is useless, and it may lead to system instability after deletion.

That's all for the reasons why I've come to crash, and if there's a better way to do it, you can share it.

The reason why the vivo phone has a black screen of death is that some software background data is still running, occupying the phone's memory, and you can choose to force restart the phone software to forcibly close it all. The specific steps are as follows:

1. Press and hold the power button for about 15 seconds, as indicated by the arrow in the figure below.

2. You can see that the option to restart appears on the phone interface, click to select.

3. You can see that the phone has a black screen when it collapses.

4. Restart your phone.

If the above measures still can't solve the vivo crash state, you can only go to the vivo mobile phone after-sales service point. Find the mobile phone manual that came with the mobile phone when you bought the mobile phone, there are the locations of the service stations in each city and **, and the service will do a comprehensive inspection and sales check for the mobile phone after the sales group slides.

It is recommended to force restart the device to try to resume use, operation method: press and hold the "Power Button" and "Volume -" for more than 10 seconds to force restart the phone (Nex 3, NEX 3S Long press the top button for more than 10 seconds).

If you can resume use after operation, you can try the following methods to avoid the recurrence of the failure:

1. If a single app crashes, try to upgrade the app to the latest version.

2. If the storage space of the device is low, the system performance will drop sharply, resulting in the application being stuck or stuck, it is recommended to use i Butler regularly to clean up the space.

3. After upgrading the system of the destroyed device to the latest version or backing up the device data, restore the factory settings (go to Settings > System Management > Backup & Reset > Clear All Data).

Concentrate; Erase all data will delete all data in the internal storage (except SD card data), including installed apps, contacts, text messages, files, etc. When there is a serious abnormality and there is no other way to solve it, this recovery can be used, please use it with caution.

Before operation, important data is backed up by cloud services.

Go to the mobile cloud service -- device cloud backup -- backup data type -- turn on the switch that needs to be backed up -- return to the previous page -- click Back up now;

If the above methods do not solve the problem, it is recommended to back up your data in advance and go to a nearby service center.

Get help. <>

Note: In order to save valuable time, it is recommended that you call the service center in advance** to confirm the service center business hours, whether the spare parts inventory is sufficient, and other imitation belt conditions.

The troubleshooting method of the black screen is Likai:

1. Force restart your phone.

Try force restarting your phone to see if it resumes, and check if the power and volume buttons are stuck in the case.

Tablet, FunTouch OS and later models: Press and hold the "Power button" and "Volume Down button" at the same time for more than 10 seconds;

Press and hold the top round button for more than 10 seconds to force restart the phone (applicable to NEX 3 NEX 3S);

FunTouch OS previous models: Press and hold the "Power Button" for more than 12 seconds.

2. The service center detects this liquid.

If the above methods fail to help recover, it is recommended to call the customer service center in advance to confirm the relevant matters and understand the working time, so as not to delay precious time.

Other black-screen scenes].

1. There is too much software running in the background, and the startup software has a black screen.

Multiple applications running in the background will occupy too much memory or other resources, and the phone may be overloaded and may cause abnormalities, so it is recommended"One-click acceleration"Clean up background apps.

2. The screen will go black when the set auto-lock time is reached.

Go to Settings - Display & Brightness - Auto Lock Screen to adjust the lock screen time to a longer time.

3. Double-click the screen to go black.

This is to turn on the double-click screen-off function, enter Settings - Quick and Assist - Intelligent Somatosensory - Smart Screen Off - Double-click to turn off the screen or Enter Settings - Intelligent Somatosensory - Smart Screen Off - Double-click to turn off the screen and turn off the function.

4. Use third-party software to have a black screen.

5. The screen is black during the call.

In order to avoid accidentally touching the screen, during a call, when the infrared sensor is blocked, the phone will automatically turn off the screen, and the screen will turn on when it is far away.