
The Sleep/Wake button, also known as the Side button, is used to lock your iPhone and turn it on or off. When you press the Sleep/Wake button, your iPhone goes into sleep mode, which locks the phone, saves battery, and prevents accidental touches or calls. You can still receive calls, messages, and notifications while in sleep mode. Additionally, sleep mode allows you to adjust the volume and listen to music. To turn on your iPhone, press and hold the Sleep/Wake button until the Apple logo appears. Sleep mode is different from shutting down or restarting your iPhone, which is done less frequently and usually to address issues with your device. The Sleep/Wake button is located on the upper right side or top of the iPhone.
| Characteristics | Values |
|---|---|
| When to use the Sleep/Wake button | When you're not using your iPhone, press the Sleep/Wake button to lock it. Locking your iPhone puts the display to sleep, saves the battery, and prevents accidental touches or calls. |
| What happens when you use the Sleep/Wake button | The display darkens, and the phone locks automatically if there is no interaction with the screen for a minute or so. You can still get phone calls, FaceTime calls, text messages, alarms, and notifications. You can also listen to music and adjust the volume. |
| How to turn on the iPhone | Press and hold the Sleep/Wake button until the Apple logo appears. |
| How to unlock the iPhone | Press the Sleep/Wake or Home button, then drag the slider. |
| How to turn off the iPhone | Press and hold the Sleep/Wake button until the slider appears, then drag the slider. |
| Additional security | You can require a passcode to unlock the iPhone by going to Settings > Touch ID & Passcode (iPhone 5s) or Settings > Passcode (other models). |
| Adjust auto-lock timing | Go to Settings > General > Auto-Lock to adjust the timing before the iPhone locks automatically. |
| Sleep Focus | The Sleep Focus feature helps reduce distractions before and during bedtime by filtering out notifications and phone calls. It can also signal to others that you're not available. You can set up a Sleep Focus schedule in the Health app on your iPhone. |
| Sleep Focus schedule | To set up a recurring sleep schedule, go to the Health app, tap Browse, tap Sleep, scroll down to Your Schedule, and tap Full Schedule & Options. Set the days for your schedule, adjust your bedtime and wake-up times, and set alarm options. |
| Customization | You can customize your Sleep Focus by allowing interruptions from specific people, customizing the Lock Screen and Home Screen, and adjusting app behavior. |
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What You'll Learn

Locking your iPhone
Additionally, you can lock your iPhone by using the Home button. Pressing the Home button once when your iPhone is locked will wake it up, and you can then swipe your finger across the Lock screen to unlock it. If you have an iPhone with Face ID, you can swipe up from the bottom of the Lock Screen to unlock it.
To further secure your iPhone, you can require a passcode to unlock it. Go to Settings > Touch ID & Passcode (iPhone 5s) or Settings > Passcode (other models) to set this up.
It's important to note that even when locked, your iPhone will still receive phone calls, text messages, alarms, notifications, and you can still listen to music and adjust the volume.
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Turning your iPhone on
The Sleep/Wake button, also known as the Side button, is located on the upper right side of the iPhone SE. Pressing this button once will lock your iPhone, putting the display to sleep, saving battery, and preventing accidental touches or calls.
To turn on your iPhone SE, press and hold the Sleep/Wake button until the Apple logo appears on the screen. This action will power on your device if it was previously turned off.
If your iPhone SE is not responding and you are unable to turn it on, there are a few troubleshooting steps you can try. Firstly, ensure that your phone is adequately charged by connecting it to a charger for at least 10 minutes. If you suspect that the issue is related to a frozen screen rather than a depleted battery, try performing a force restart by simultaneously pressing and holding the Sleep/Wake and Home buttons for at least 10 seconds until the Apple logo appears.
In some cases, the issue may be related to a faulty battery or a dirty charging port. If your iPhone SE still doesn't turn on after attempting the above solutions, consider replacing the battery or cleaning the charging port with a gentle cleaning tool, such as a wooden stirrer or a toothpick, dipped in isopropyl alcohol to remove any dirt or grime.
If none of these solutions resolve the issue, you may need to seek professional technical support or consider purchasing a new iPhone.
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Unlocking your iPhone
The Sleep/Wake button, also known as the Side button, is used to lock your iPhone when you're not using it. Pressing this button will turn off the display, save battery, and prevent accidental touches or calls. To unlock an iPhone, you simply need to press the Sleep/Wake or Home button and then drag the slider.
However, if you have forgotten your passcode, you will need to take different steps to unlock your iPhone. It is important to note that unlocking your iPhone without data loss is unlikely, unless you have a backup. If you do have a backup, you can restore your iPhone from that backup after unlocking it.
For iPhone 8 and later:
- Press and hold the Side button and a Volume button until the power-off slider appears.
- Turn off the phone.
- Connect it to a computer while holding the Side button until the recovery mode screen appears.
- Open iTunes or Finder, select your iPhone, and choose the "Restore" option to reset the device.
- After the restore process is complete, set up your iPhone as a new device or restore from your backup.
For iPhone 7 and 7 Plus:
- Press and hold the Side button until the power-off slider appears.
- Turn off the phone.
- Connect it to a computer while holding the Volume Down button until the recovery mode screen appears.
- Follow the same steps as above to restore your iPhone.
For iPhone 6s and earlier:
- Press and hold the Side (or Top) button until the power-off slider appears.
- Turn off the phone.
- Connect it to a computer while holding the Home button until the recovery mode screen appears.
- Follow the same steps as above to restore your iPhone.
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Turning your iPhone off
The Sleep/Wake button on your iPhone is a handy feature that allows you to quickly put your phone to sleep or wake it up. Putting your phone to sleep is not the same as turning it off. When your iPhone is asleep, the screen is darkened, and accidental touches will not register. This is useful for preventing accidental calls when your phone is in your pocket or bag.
To turn off your iPhone, you need to follow a few simple steps. Firstly, identify the correct buttons to press. On iPhone 6 and later models, including iPhone SE (2nd generation) and later, the side button is used to turn off the device. On the iPhone SE (1st generation) and earlier models, the top button is used instead.
Once you have located the appropriate button, press and hold it simultaneously with either of the volume buttons. This will bring up the power-off slider on your screen. Drag the slider to the centre of the screen to initiate the shutdown process. Your iPhone will now be turning off.
If you want to turn your iPhone back on, simply press and hold the Side button (or the Top button on older models) until the Apple logo appears. Then, wait a few seconds for your iPhone to start up and boot into the operating system.
It is worth noting that the Sleep/Wake button has additional functions. For example, on iPhone models with Face ID, you can wake your device by raising it and looking at the screen, or by pressing the Side button. Additionally, the Sleep/Wake button can be used to activate Siri or Apple Pay, depending on your settings.
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Restarting your iPhone
The Sleep/Wake button, also known as the Side button, is used to lock your iPhone. Pressing this button will turn off the display, save battery, and prevent accidental touches or calls. It is located on the upper right side or top of the iPhone.
Now, let's discuss restarting your iPhone. Restarting your iPhone can be helpful if your device is misbehaving or unresponsive. Here are the steps to restart your iPhone:
- Press and hold the Sleep/Wake button (or Side button) until the slider appears.
- Drag the slider to turn off your iPhone completely.
- After turning it off, press and hold the Sleep/Wake button again until the Apple logo appears.
- Release the button and wait for your iPhone to start up.
For newer iPhone models without a Home button, you can simultaneously press and hold the Side button and either Volume button until the sliders appear, then drag the Power Off slider.
If your iPhone is unresponsive and won't turn off using the above method, you can force restart it. For iPhone SE, hold down the "Home" button (if present) and the "Power" button until the Apple logo appears.
Additionally, software glitches or operating system issues may cause your iPhone to restart unexpectedly. In such cases, updating your iPhone to the latest iOS version might resolve the issue. You can also try resetting all settings to factory defaults by going to Settings > General > Transfer or Reset iPhone Reset > Reset > Reset All Settings. This method will not cause data loss.
If you're experiencing persistent issues, iTunes restore is recommended by Apple to solve iPhone restart problems. Ensure you back up your iPhone before proceeding. Connect your iPhone to iTunes on your computer using a USB cable. In iTunes, click on your iPhone icon, then navigate to "Summary" or "General." After backing up, click the "Restore iPhone" button and confirm the action. Please note that this method will erase all data on your device.
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Frequently asked questions
You should use the sleep/wake button (also known as the side button) when you want to lock your iPhone. This will put the display to sleep, save battery, and prevent accidental touches or calls.
To turn on your iPhone SE, press and hold the Sleep/Wake button until the Apple logo appears.
To unlock your iPhone SE, press the Sleep/Wake or Home button, then drag the slider.
To turn off your iPhone SE, press and hold the Sleep/Wake button until the slider appears, then drag the slider.
In normal use, you don't need to restart your iPhone SE often. However, some experts recommend a weekly restart to keep your phone running smoothly.



































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