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3. Double-Tap to Lock and Unlock Android – To see whether the double-tap to turn on the screen and double-tap to turn off the screen features are enabled on your Android device, head into your Settings to take a look. On a Samsung phone, you should go to Advanced Features > Motions and Gestures, Within the motions and gestures section, you will be able to find a number of handy settings, including double-tap to turn on and off your screen. This feature can also be used to lock your phone—double-tap to lock, double-tap to unlock. On Pixel phones you can find it at Settings > Display > Lock screen > Tap to check phone, You can’t configure it to turn off your display, though.
Does iPhone 11 have a Lock Screen?
From the lock screen, swipe up from the bottom of the screen then enter the passcode if prompted. If an app isn’t available on your Home screen, swipe left to access the App Library. then select the auto-lock time interval. Auto-lock is restricted if Low Power Mode is enabled.
Why is my iPhone 11 screen not locking?
Fix 1: Re-enable Auto Lock on iPhone – To make sure your iPhone apply the auto-lock setting, it’s suggested to re-enable it. On your iPhone, go to Settings > Display & Brightness > Auto-Lock, Select the timer you want to set for your iPhone. 
Note The selection for Never means that your iPhone will never be screen locked.
What does it mean to lock my iPhone?
Simple Ways to Lock Your Smartphone – Information Security If you leave your smartphone unattended for a while – or worse, if it’s lost or stolen – you don’t want to make it easy for someone to go through the contents. Setting your smartphone lock means that a PIN or password is required for access after an inactive period.
This is the single easiest way to thwart the efforts of would-be thieves to steal your personal information through opportunistic unauthorized access. The device-specific steps listed below may vary somewhat between OS versions. You can usually lock your smartphone by using a screensaver or tweaking the security settings.
If you can’t find how to do this on your device, contact the manufacturer. Here are a few examples:
Android: Go to Settings > Location & security > Set up screen lock, The timeout delay is configured separately, under Settings > Display, Android also offers a connect-the-dots swipe pattern you can use in lieu of a PIN or password, but it might leave tell tale smudges on your screen. BlackBerry: Go to Options > Security Options > General Settings > Password iPhone: Go to Settings > General > Passcode lock Windows Phone 7: Go to Settings > Lock & Wallpaper
: Simple Ways to Lock Your Smartphone – Information Security
Why is iPhone 13 not locking?
Set the correct Auto-Lock duration – Your iPhone fails to automatically turn off the display and lock the device due to incorrect Auto-Lock settings. You can quickly fix this by following these steps:
- Open Settings and tap Display & Brightness,
- Tap Auto-Lock,
- Choose a shorter duration, like 30 seconds or 1 minute. If you select Never, your iPhone won’t go to sleep automatically.
Is the Auto-Lock option grayed out ? Turn off Low Power Mode, and then you can get inside Auto-Lock settings to change it.
Where is my Lock Screen?
How to set up or change the lock screen on your Samsung phone – Go to Settings > Lock Screen > Screen lock type, From there, you’ll have several different lock screen options to choose from:
- Swipe: This lock type allows you to swipe in any direction on your screen to unlock your phone.
- Pattern: If you choose to unlock your phone this way, you’ll draw a pattern on a 3-by-3 grid of dots.
- Pin: A PIN lock is a four-digit code. Be sure to pick a sequence of numbers you can easily remember.
- Password: The highest level of security for your phone. Your password will need to be unique, memorable and contain 7 characters with at least one letter. For more tips on how to create a strong password, check out our guide.
Select whichever security method you prefer and follow the onscreen prompts to set up. You’ll also see options to turn on additional Biometrics features: Face recognition or Fingerprints. On select older Samsung® models, Iris Scanner (S8/S8+) or Intelligent Scan (S9/S9+) may also be available.
- Face recognition: Allows you to unlock your phone and verify yourself in apps simply by holding your face directly in front of your phone screen.
- Fingerprints: Quickly and easily open your phone with a touch of your finger.
- Iris: Scan your eyes to ensure only you are able to see what’s on your phone.
- Intelligent Scan: Authentication that combines both Iris and Face recognition technology to unlock your device.
If you choose to use any of these advanced security features, follow prompts onscreen, or go to Settings > Biometrics and security for additional customization options. Keep your phone working the way it should Our trusted experts can fix most phones in 45 minutes or less. Schedule a repair or visit your nearest store today. Schedule a repair
Lock and unlock device – Press the Side button then slide the bottom bar up. To lock iPhone, press the Side button, Note: iPhone locks automatically if your device is idle for 30 seconds. To adjust the screen lock time, select the Settings app > Display & Brightness > Auto-Lock > desired lock time, 
Why is my iPhone screen always on?
Help for an iPhone That Stays on All the Time An iPhone’s Auto-Lock feature controls the length of time it takes for the device to automatically turn off the display. When the Auto-Lock menu’s “Never” option is selected, your iPhone’s display remains on.
Tap “Settings” on the iPhone’s home screen. Select “General” and then scroll down the General screen until you get to “Auto-Lock.” Select the “Auto-Lock” option to open the Auto-Lock screen. Select the length of time before the iPhone automatically turns off the display – such as “2 minutes.” Press the “Home” button to go back to the device’s home screen.
: Help for an iPhone That Stays on All the Time
Why is my iPhone screen not locking?
Fix 1: Make Sure Auto Lock is Enabled on Your iPhone – In case you or someone else has disabled the Auto Lock feature, your phone will obviously not get locked no matter how many minutes or hours have passed since you used your device. You can verify the status of the Auto Lock feature and enable it if it’s disabled by following the following steps.
On your iPhone, launch the Settings and tap on Display & Brightness followed by Auto-Lock. On the screen that follows, you will find multiple time durations for the Auto Lock feature. Tap on the one that you think is suitable for you and the feature will be enabled.
Make sure not to choose the Never option or your iPhone will never be locked automatically. It is just like you have disabled the feature on your device. 
Turn on Auto Lock on your iPhone