How to fix Samsung Galaxy A21S black screen

From time to time the screen of Samsung Galaxy A21S stays black. This trouble can happen in a lot of circumstances. Often it happens after the Samsung Galaxy A21S falls. Other times, the screen stays black after a start, lock, or sleep. In any case, do not worry, you will find many techniques to resolve the black screen of your Samsung Galaxy A21S. For that, it’s going to be needed to check several points before attempting the different solutions. We will find out at first what things to verify when the screen of Samsung Galaxy A21S remains black. We will find out in a second time all the tricks to be able to unlock this bad black screen.black-screen-samsung-galaxy-a21s

What should you watch in case you have a black screen on Samsung Galaxy A21S

Before embarking on the techniques, we suggest you to check the points below to be able to better understand where the trouble can originate. This will deliver you good indications of the nature of the trouble.

Is the Samsung Galaxy A21S LED on when the screen remains black?

One of the first points to check is the small led that is on the top of your screen. In cases where the LED is red or blue when the Samsung Galaxy A21S screen remains black, it means that the mobile phone is turned on. In cases like this, it is very likely that the trouble originates from the screen.

Is the Samsung Galaxy A21S charged?

Sometimes, a deep battery discharge prevents the Samsung Galaxy A21S from turning on for a time. Ensure that the Samsung Galaxy A21S is completely recharged by leaving it connected for at least one hour. In the event that after this the LED doesn’t light up and the screen stays black, the trouble can potentially originate from the battery.

Is the Samsung Galaxy A21S damaged?

If the Samsung Galaxy A21S screen remains black after shock, after dropping , after being wet , or after cracking , the screen might be broken. In cases like this, not one of the tricks below will work. You will then have to bring your Samsung Galaxy A21S to a repairman.

How to proceed when ever the Samsung Galaxy A21S screen stays black?

After checking out that the trouble comes from the screen, you can try the next ideas to unlock the black screen of your Samsung Galaxy A21S. If a technique doesn’t work, check out the following one.

Plug the Samsung Galaxy A21S into its charger

One thing to do when the screen of Samsung Galaxy A21S remains black is to put the telephone on. This makes it possible to be peaceful for any following manipulations. This additionally handles the possible trouble of a deep discharge of the telephone battery.

If you can, take out the battery from the Samsung Galaxy A21S

If the Samsung Galaxy A21S is easily removable, we suggest you to remove the battery . This sometimes handles the black screen trouble. Wait some secs, then turn the battery back on and try to start the telephone. In cases where the screen is still blocked, check out the following step.

Remove SIM card and SD card

It sometimes occurs, without explanation, that the SIM card or the SD card conflicts with Samsung Galaxy A21S and causes a black screen. One of the tricks to try is to take out the SIM card and the SD card. Once it’s done, you must try to start the phone. In cases where it works, it implies there is a conflict with the SIM or SD card.

Force Samsung Galaxy A21S to reboot

If the screen stays black, the trouble often resolves with a forced reboot . To do this, you need to press a number of keys simultaneously. You must stay at least TEN secs for the forced reboot to work. The key combo is determined by the models but had to be one of the following:

  • low volume + power button
  • low volume + power button + cough Home
  • high volume + power button
  • volume top + touch power + cough Home
  • touch power + cough Home

Hang on until the battery is empty

At last, in the event that not one of the above méthodes perform, you can try to let your battery discharge. Make sure the battery is entirely empty. Once it’s performed, plug your Samsung Galaxy A21S into its charger and try to start the Samsung Galaxy A21S.