If your phone gives no indication of charging after a few minutes, try a different charger and/or wall outlet.

First, you’ll need to display the open apps. On newer Androids you’ll usually do this by swiping up from the bottom of the screen, holding your finger, and then letting go—you’ll see a list of currently-open apps. [1] X Research source If that doesn’t work, tap the small square icon at the bottom of the screen (usually at the bottom-right) to display open apps. Or, if you’re using a Samsung model, tap the three horizontal lines at the bottom instead. [2] X Research source Swipe through the apps until you see the one that’s frozen. Swipe it off the screen. If you had to swipe left or right to scroll through the apps, swipe the app upwards to close it. If you scrolled vertically, swipe the app horizontally to close it. If you can’t close the app this way, open your Android’s Settings, select Apps or Apps and notifications, tap the app you want to close, and select Force Stop. If you don’t see this, tap App info first. [3] X Research source Tap OK to confirm. If an app keeps giving you problems, consider deleting it to avoid future problems.

Don’t lift your finger from the power button until your Android turns off. If it doesn’t turn back on on its own, wait about 30 seconds, and then press and hold the power button to turn it back on. Depending on your Android, you may see the option to select Restart or Power off to continue. If you select Power off, wait about 30 seconds after the screen goes blank to try turning it back on.

Don’t lift your finger from the power button until your Android turns off. If it doesn’t turn back on on its own, wait about 30 seconds, and then press and hold the power button to turn it back on. Depending on your Android, you may see the option to select Restart or Power off to continue. If you select Power off, wait about 30 seconds after the screen goes blank to try turning it back on.

Don’t lift your finger from the power button until your Android turns off. If it doesn’t turn back on on its own, wait about 30 seconds, and then press and hold the power button to turn it back on. Depending on your Android, you may see the option to select Restart or Power off to continue. If you select Power off, wait about 30 seconds after the screen goes blank to try turning it back on.

On many modern Androids, you can press and hold the power button for about 30 seconds (sometimes more, sometimes less) to force it to restart. On most Samsung models, you can force-restart by pressing-and-holding both the volume-down and right-side power buttons at the same time. Hold the buttons down for 7 to 10 seconds. If your Android has a removable battery, you can force it to restart by removing the battery, reinserting it, and then powering the phone back on.

First, if your phone is on and frozen, press and hold the power button until it powers down. Press and hold the recovery mode buttons for your model—if you’re using a Google Pixel or Android One, press and hold the power and volume-down buttons. If you have a Samsung model, press and hold the power and volume-up buttons instead. If you have a Samsung, you’ll eventually see the Samsung logo followed by “Installing system update. " Then you’ll see “No command. " After about 15 seconds, your phone will enter recovery mode. Use the volume buttons to scroll to the Wipe data/factory reset option, and then press the power button to select it. Select Yes to confirm. Your Android will now restore to its original factory settings. When the restore is complete, you’ll be back to the recovery mode menu. Press the power button and select Reboot system now to reboot normally. Once your Android comes back up, you’ll be asked to select a wireless network and sign in with your Google account. If you have a backup, you can restore from your backup when prompted.

If you see a battery outline with a red sliver when you connect your phone to the charger, your phone’s battery is completely drained and needs time to recharge. Wait about 15 to 20 minutes, and then try to power on your phone, continuing to let it charge. If the battery symbol doesn’t appear within an hour of plugging in the phone, try a different charger/outlet. [7] X Research source

On iPhone X or later, swipe up from the bottom of the screen and pause in the middle. Swipe left or right to find the app that’s frozen, and then swipe up on the app’s preview to force-close the app. [8] X Research source On iPhone SE, iPhone 8, and earlier, double-tap the home button below your screen, swipe left or right until you’ve reached the app that’s frozen, and then swipe up on the app to close it. If there’s an app that keeps freezing up on you, consider deleting it to avoid problems in the future. If you are unable to close the app with these steps, continue with this method.

If you have an iPhone X, 11, or 12, press and hold either side volume button until the slider appears, then swipe the slider and wait 30 seconds for your phone to power down. [9] X Research source To restart your phone, press and hold the right side button until you see the Apple logo. If you have an iPhone SE, iPhone 8, or earlier, press and hold the power button (on the top-right), and then drag the slider when it appears. Wait about 30 seconds for the phone to completely power down. To turn it back on, press and hold the power button until you see the Apple logo. If this doesn’t work, move on to the next step.

iPhone SE 2nd Generation, iPhone 8, and later: Press and release the volume-up button. Press and release the volume-down button. Press and hold the right side button until the Apple logo appears. iPhone 7 and 7 Plus: Press and hold the volume-down button and the right-side buttons at the same time. Keep holding these buttons down until the Apple logo appears. Earlier iPhones: Hold down the Home button and the power buttons at the same time. You can let go when you see the Apple logo on the screen.

Press and release the volume-up button. Press and release the volume-down button. Press and hold the right side button until the Apple logo appears.

Connect your iPhone to a computer using a USB cable. If you are using a PC, make sure you have the latest version of iTunes installed. Open Finder (if you’re using macOS Catalina or later), or iTunes (if you’re using macOS Mojave and earlier or a Windows PC). Select your iPhone in the left panel (if using Finder) or click the iPhone icon at the top of iTunes. Put your iPhone into recovery mode: iPhone SE 2nd generation, iPhone 8, and later: Press and release (quickly) the volume-up button, and then press and release the volume-down button. Then, press and hold the side button until you see the recovery mode screen. iPhone 7 and 7 Plus: Press and hold the volume-down and right-side buttons at the same time. Keep holding the buttons down until you see the recovery mode screen. iPhone SE 1st generation, iPhone 6, and earlier: Press and hold the Home button and the right-side buttons down until you see the recovery mode screen. Click Update when prompted on your Mac or PC. This process will try to update your iPhone without destroying your settings. If the update isn’t able to run or it doesn’t resolve your issue, you’ll need to restore your iPhone. Continue to the next step.

To restore your iPhone, just click Restore on your Mac or PC after the update fails. If you’ve already left that screen, reconnect your iPhone to the computer, restart the iPhone in recovery mode, and then click Update. After the update, you’ll be asked to connect your iPhone to a Wi-Fi network and sign in with your Apple ID. Once you’re logged back in, you’ll be prompted to restore from backup (if available).