Is your screen stuck? What to do when your smartphone freezes and how to prevent it

I was supposed to be using my phone as usual, but suddenly the screen stopped working and my phone freezes. Smartphones are now a daily necessity, and if you can't use them, you'll be in trouble. In particular, what should I do when the button does not work and I cannot restart it? Under the supervision of Koji Watanabe and Ichiro Yamanishi, who are in charge of smartphone quality control at KDDI, we will introduce how to deal with freezes and preventive measures.

① Freeze the app ② Freeze the smartphone itself

Regarding the freezing of the app in ①, if only that app does not work, close the fixed app once, check the review of the app store and the notice of the app provider, update the app, etc. We will respond in a timely manner.

■ How to exit the app

Swipe up from the bottom of the smartphone screen and stop your finger in the middle of the screen to display a list of waiting apps. ends.

Press the home button twice to display a list of waiting apps. Select the app you want to quit and swipe up to quit the app.

Swipe up from the bottom of the smartphone screen and stop your finger slightly below the middle of the screen to display a list of waiting apps, so select the app you want to end. and swipe up to exit the app.

Tap the "■ button" or "||| button" to display a list of waiting apps. ends.

The problem is ② freezing the smartphone itself. It would be nice to be able to operate the smartphone other than the app as in ①, but if there is no response at all when pressing the screen or buttons on the smartphone, there is no choice but to try to restart the smartphone itself.

How to force restart when the smartphone does not work

The forced re-beating method of the smartphone differs depending on the model. For details, refer to the smartphone manufacturer's website. The forced restart method for some series (manufacturers) is described below.

Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the side button. Release the buttons when the Apple logo appears.

Hold down both the volume down button and the sleep/wake button at the same time. Release both buttons when the Apple logo appears.

Hold down both the sleep/wake button and the home button at the same time. Release both buttons when the Apple logo appears.

Press and hold the volume up button and the power button on the side of the smartphone at the same time for at least 8 seconds. If you release the button after the vibration vibrates 3 times, it will restart forcibly.

Press and hold the volume down button and power button on the side of your smartphone for at least 7 seconds at the same time. If you release the button after the vibration vibrates once, it will restart forcibly.

Press and hold the power button for 8 seconds or more. If you release the button after the vibration vibrates once, it will restart forcibly.

Press and hold the volume up button and the power button on the side of the smartphone at the same time for 11 seconds or more to force a restart. In addition, the TORQUE series can be turned on after removing the cover on the back of the smartphone and removing the battery back.

Press and hold the volume up button and the power button on the side of the smartphone for 10 seconds or more at the same time to force a restart.

Press and hold the power button on the right side and the volume up button on the left side at the same time for at least 8 seconds (until the OPPO logo is displayed).

Press and hold the power button for 10 seconds or longer. When you release the button after the vibration vibrates once. Force reboot.

So, why does a smartphone freeze in the first place? Here are the causes and preventative measures.

There are several reasons why a smartphone freezes (looks like a freeze).

① Insufficient chip performance of smartphones If the processing power of the smartphone is insufficient, as in the case of launching the latest high-definition game application on a model several years ago, it is jerky and does not become a game. , there are cases that look like freezes. The chip performance of smartphones is improving year by year, but even with models released at the same time, there are differences in chip performance depending on the manufacturer and series, so when using large-capacity apps, check the recommended smartphone specifications. Good to keep.

As a response, you can change the model to a smartphone equipped with a high-performance chip, or in the case of games, you may be able to improve by changing the settings such as lowering the drawing quality, so check the help site of the application etc. Let's try

(2) Insufficient memory (RAM) capacity for execution of smartphones Similar to chips, the RAM capacity of smartphones is increasing year by year, and each manufacturer has devised a memory optimization function in the OS itself. There is also, so if you are using a relatively latest smartphone, freezes due to this factor have decreased. However, in the case of relatively old models or models with a small amount of RAM, the performance may not be sufficient to comfortably process the latest apps, and display stuttering or forced termination of apps may occur.

As of November 2021, there are no models with extremely low memory among the top models of each manufacturer sold at official shops of telecommunications companies. As a countermeasure, it is sometimes said that "memory cache clearing" such as WEB browsers is effective, but as mentioned above, smartphones are evolving for each model, so there is a possibility that the effect will not be as good as before. There is It would be nice to try it out.

③ Problems with apps In addition to smartphone chips and memory, there are freezes caused by "badly behaved apps". If it is a normal application, even if multiple applications are running at the same time in the smartphone, it is basic to share and use the resources related to the processing capacity of the smartphone with multiple applications, but some "bad behavior" There are examples of apps monopolizing resources.

If it is an easy-to-understand situation such as "The operation became slow after installing this app", it can be solved by uninstalling the app. For this reason, it is a good idea to make a habit of not installing unnecessary applications on a regular basis and uninstalling them when they are no longer needed. It's also helpful to check store ratings and reviews before downloading an unknown app.

④ Malfunction of smartphone software Occasionally, there are cases where the software freezes due to a malfunction of the smartphone software. Updating to the latest version may solve the problem, so we recommend frequent software updates. Don't forget to make a backup just in case before updating.

⑤ Smartphone hardware failure Smartphone freezes are mostly caused by the smartphone's chip performance / memory shortage, or software defects in the application or smartphone, but if you have the latest smartphone, deleting the application or updating the software will also fix it. If not, you may have a hardware failure. In this case, repair is necessary, so please contact the support window of the smartphone manufacturer.

Again, I will summarize what you should do on a regular basis so that your smartphone does not freeze.

・Update to the latest software ・Uninstall unnecessary apps

Smartphones are now a daily necessity, and if they suddenly freeze, it will interfere with work and private life. Use this article as a reference to take preventative measures on a regular basis and remember the procedure in case of an emergency.

* Contents as of November 2021