To stop your phone screen from turning off automatically, you need to adjust the screen timeout or auto-lock setting, not prevent the phone from fully powering down. Your phone is designed to lock or dim its display after a period of inactivity to save battery, which is normal behavior on both iPhone and Android devices.
Why your phone screen turns off automatically
When your phone screen turns off, it is not actually shutting down the device. Instead, the screen is locking or timing out the display to conserve battery life. This is a standard feature on iPhones and Android phones, including Samsung Galaxy devices. The phone remains powered on and ready for use, but the screen dims and eventually locks to prevent accidental touches and save energy.
Stop your phone screen from turning off on iPhone
The Apple guide for Auto-Lock is for iPhone on iOS; the support page shown does not list a model restriction for this setting. On an iPhone, you can adjust how long the display stays on before it locks. Follow these steps:
- Open the Settings app.
- Tap Display & Brightness.
- Tap Auto-Lock.
- Choose a longer time length from the available options.
Your iPhone also includes Attention Aware Features, which can keep the screen from dimming or locking while it detects that you are looking at it. This feature uses the front camera to sense your attention and will keep the display on as long as you are facing the screen. On iPhone, the display stays on while you are looking at it, then dims and eventually locks if you do not touch the screen for 'a minute or so.'
Stop your phone screen from turning off on Android (Samsung Galaxy)
Samsung's pages are for Galaxy phones and tablets. The default screen timeout on Samsung Galaxy phones is 30 seconds. On a Samsung Galaxy phone, the setting is called screen timeout. To change it:
- Open the Settings app.
- Tap Display.
- Tap Screen timeout.
- Pick a duration from the list, which ranges from 15 seconds to 10 minutes.
If your phone locks too soon after the screen turns off, you can also adjust the lock-screen delay. Go to Settings > Lock screen > Secure lock settings > Auto lock when screen turns off. Here you can choose a delay from immediately to 30 minutes after entering your PIN, pattern, or password. Samsung's 'Auto lock when screen turns off' setting has a maximum of 30 minutes on supported Galaxy devices with lock screen security set up.
Turn off power saving mode to keep the screen on longer
Power saving mode can shorten your screen timeout to conserve battery, causing the display to turn off more quickly. If you have power saving mode enabled, disabling it may help keep the screen on longer. On a Samsung Galaxy phone, navigate to Settings > Battery and device care > Battery > Power saving and turn off the top switch. On other Android phones, the path is similar: Settings > Battery > Power saving. Disabling this mode can prevent the screen from timing out as aggressively.
Frequently Asked Questions
What is the difference between screen timeout and power-off?
Screen timeout controls how long the display stays on before it locks or turns off. Power-off refers to the phone completely shutting down, which usually only happens when the battery is critically low or you manually turn it off. Adjusting screen timeout does not affect the phone's ability to fully power down.
Does keeping the screen on longer drain the battery faster?
Yes, keeping the screen on for extended periods consumes more battery power. The display is one of the largest power drains on a phone. Choosing a longer timeout or disabling power saving mode will increase battery usage, so you may need to charge your phone more often.
What should I do if my phone actually shuts down instead of just timing out the screen?
This could indicate a hardware issue, such as a failing battery or a loose connection, or a software problem that requires professional diagnosis. Consider contacting your device manufacturer or a technician for assistance.
Can I set the screen to never turn off?
On Samsung Galaxy phones, the maximum screen timeout is 10 minutes, though the auto-lock delay can be set up to 30 minutes when a lock screen is active. There is no standard setting to keep the screen on indefinitely on most devices.
Will updating the software fix the screen turning off too quickly?
However, keeping your phone updated can resolve other software glitches that might affect display behavior. If the problem persists after adjusting settings, a software update may help, but it is not a guaranteed solution.
For the wider topic, see powering your phone on and off.
