Why Is My Phone Beeping Randomly? 5 Fixes for Android and iPhone

Updated on October 21, 2026

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When your phone beeps with no call or visible message, the cause is usually an app notification, an emergency alert that was never cleared, or a system sound such as the charging tone. Start with the settings; only the cable test takes time, about 30 minutes of charging. Safe mode and a factory reset come last.

Common symptoms and causes of a phone beeping randomly

A phone that makes odd noises is not necessarily broken. The most common causes:

• App notification: an unread or snoozed notification can sound again later.
• Repeated notification alerts on Samsung: the sound keeps coming back until you clear the notification.
• Uncleared emergency alert: on Samsung, it keeps sounding.
• Calendar alerts, reminders, alarms and timers.
• System sounds: lock sound, keyboard feedback, charging sound.
• Beeping while charging: a damaged cable or adapter, a dirty port, an uncertified accessory, or liquid in an iPhone connector.
• A downloaded app misbehaving, or an outdated system.
• Spyware: a rare case. No official source presents random beeps as a sign of eavesdropping.

Before you start

The iPhone paths below apply to iOS 26 and 27. On Android, menus change from one maker to another. Back up the phone (iCloud or Google account) and write down your account password and your screen lock code.

Warning: a factory reset erases all data and apps, and an erased eSIM must be reactivated by your carrier. Safe mode removes some Android widgets, and uninstalling an app can delete its data. Back up first.

Warning: unplug the charger from the wall before you inspect the cable or the port, and never work on a device that is plugged in. Do not use a damaged cable or adapter, and do not push any object into the port. The capacitors in a power adapter stay charged after unplugging: do not touch them, and never open a charger.

Warning: never puncture, bend or heat a lithium battery. A swollen battery will not recharge and belongs at a collection point, so work on a non-flammable surface. Never charge a wet connector: the pins can corrode and permanently damage the phone.

Solution 1: find the notification or app that makes the sound

On Android (Pixel and similar models)

1. Open Settings > Notifications, then the notification history, if your phone has one.
2. Look for the app that sent a notification at the time of the beep.
3. Touch and hold the entry to open that app’s settings.

On Samsung Galaxy

1. Open Settings > Notifications > Advanced settings and switch on Notification history.
2. At the next unexplained beep, open that history.
3. Note the app that just sent a notification.
4. If unread or snoozed notifications are still in the shade, clear them: they can sound again.

Tip: write down the exact time of the next beep. It points you to the right line in the history.

If the history shows the app, go to Solution 2 to silence it. Apple’s help pages do not describe a notification history on iPhone, so go straight to the settings of each app you suspect.

Solution 2: adjust notification and system sounds (Android, iPhone)

On Android (Pixel and similar models)

1. Swipe down from the top of the screen and touch and hold the notification that just sounded.
2. Tap the settings icon.
3. Turn off all notifications for the app, or only the category responsible.
4. For an app that is not in the shade, open Settings > Notifications > App notifications.
5. If the beeps come in bursts, turn on Settings > Notifications > Notification cooldown > Use Notification cooldown.

Notification cooldown spares calls, alarms, priority conversations and emergency alerts.

On Samsung Galaxy

1. Open Settings > Notifications > App notifications and switch off the app responsible.
2. To set the sound by category, turn on Settings > Notifications > Advanced settings > Manage notification categories for each app.
3. In the same menu, switch off Repeat notification alerts.
4. Set the general sounds in Settings > Sounds and vibration > Notification sound / System sound.

On iPhone

1. Open Settings > Notifications and tap the suspect app below Notification Style.
2. Turn off Sounds, or Allow Notifications to silence everything.
3. If the app offers it, tap Customize Notifications to sort the types of notification.
4. In Settings > Sounds & Haptics, tap each category (Text Tone, Calendar Alerts and so on) to hear its sound.

The beep should stop or change. That confirms the source. If your iPhone does the opposite and makes no sound at all, see our guide on an iPhone that makes no sound.

Good to know: on iPhone, alarms, timers, alerts and system sounds follow the ringtone volume by default. To set them apart, turn off Match Ringtone Volume under Settings > Sounds & Haptics > Alarms and Timers or Alerts and System Sounds.

Solution 3: check emergency alerts and reminders

A phone that sounds off by itself with a tone close to an alarm, even in silent mode, may have received an emergency alert. Keep these alerts on: they warn of real danger, and in some countries they cannot be turned off.

On iPhone

1. Open Settings > Notifications > Government Alerts.
2. Tap Emergency Alerts and look at Always Play Sound: when it is on, the alert sounds even in silent mode.
3. In Settings > Sounds & Haptics, tap Calendar Alerts and Reminder Alerts to recognize those sounds.

On Android and Samsung

1. Open Settings > Notifications > Wireless emergency alerts.
2. Choose how often to get alerts and which types to receive.
3. On Samsung, clear any emergency alert left in the shade: otherwise it keeps sounding.

On Samsung, this menu is under Settings > Notifications > Advanced settings. The exact wording can vary with the One UI version.

Good to know: in the United States, Apple’s list under Emergency Alerts includes AMBER, Public Safety and Emergency Alerts, and a Test Alerts switch (off by default) makes the phone sound like an alarm and say it is a test. On Samsung, presidential alerts cannot be switched off. Availability depends on your carrier, your phone model and your country.

Solution 4: check the cable, the charger and the charging port

The charging sound

1. On a Pixel, turn off charging sounds and vibration in the sound settings.
2. On Samsung, turn off the charging sound in Settings > Sounds and vibration > System sound.

Good to know: on a Pixel, the charging sound only plays if the ring sound is on.

The cable, the adapter and the port

Apple describes this routine for the iPhone. Our sources give no equivalent for Android, but a damaged cable or charger needs replacing either way.

1. Unplug the adapter from the wall and the cable from the phone.
2. Inspect the cable and the adapter for broken or bent prongs and a worn sheath.
3. Remove visible debris from the charging port without pushing any object into it.
4. Plug the cable in firmly, straight into the charger, with no adapter in between.
5. Try another cable, another charger or another outlet.
6. Let it charge for 30 minutes.

The phone should charge without repeated beeps or alerts. On iPhone, the “accessory not supported” alert comes from a dirty port, a faulty accessory or an unsuitable charger.

Liquid alert on iPhone (XS, XR and later)

Warning: no heat, no compressed air, no cotton swab, no rice.

1. Unplug the cable from both ends.
2. Gently tap the iPhone against your hand with the connector facing down.
3. Leave the iPhone in a dry, airy place.
4. Wait at least 30 minutes.
5. Plug the cable back in.
6. If the alert returns, let it dry for up to 24 hours.

Tip: while it dries, wireless (Qi) charging still works if the back of the iPhone is dry.

If the alert returns every time with the same third-party cable, contact its maker.

Solution 5: update, safe mode and suspicious apps

Update the system

1. On iPhone, back up the phone.
2. Plug it into power and connect it to Wi-Fi.
3. Open Settings > General > Software Update.
4. Tap Download and Install.
5. On Android, charge to at least 75% and connect to Wi-Fi.
6. Open Settings > System > Software updates.

Isolate an app with safe mode (Android)

Safe mode starts the phone without the apps you downloaded.

On Pixel 6 and later:

1. Take a screenshot of your home screen so you can put the widgets back afterward.
2. Hold the Power and Volume Up buttons for a few seconds.
3. Touch and hold Power off or Restart.
4. Tap OK.

On Samsung Galaxy:

1. Open the quick panel by swiping down with two fingers.
2. Touch and hold the power icon at the top right.
3. Tap Safe mode.

Warning: uninstalling an app can delete its data.

Then, on every model:

1. Use the phone: if the beep disappears, a downloaded app is the cause.
2. On Samsung, uninstall suspicious apps first: those with no name, a name made of random letters, or ones you do not recognize.
3. Leave safe mode by restarting the phone (on Pixel 6 and later: Power and Volume Up, then Restart).
4. Then remove recent apps one at a time, restarting normally after each one.

Also run a Play Protect scan from the profile icon in the Play Store. If the phone restarts as well as beeping, read why a phone restarts by itself.

If nothing works

Stop if the beep only happens while charging despite another cable, another charger and a clean port. Contact the maker’s support or Apple service, with your system version at hand (on Android, Settings > About phone > Android version).

On Android, messages sent in your name without your doing anything can point to malware. If the signs persist, a reset or the maker’s help may be needed.

Warning: a factory reset, as a last resort, erases all data and apps on the phone. Back up first; content stored in iCloud or your Google account stays online.

On iPhone:

1. Back up the iPhone.
2. Open Settings > General > Transfer or Reset iPhone > Erase All Content and Settings.
3. Enter the passcode or Apple Account password if asked.
4. Tap Continue.
5. For an eSIM, choose whether to erase it or keep it.

On Pixel:

1. Charge the phone to at least 70%.
2. Open Settings > System > Reset options > Erase all data (factory reset).
3. Tap Erase all data.
4. Enter your PIN if asked.

Allow up to an hour. Your Google account and screen lock code will be asked for at restart. On Samsung or Xiaomi the path differs: follow the maker’s help.

Protect your phone: our selection

A good cable and charger rule out charging beeps, a backup protects your data before a reset, and a security suite keeps watch on suspicious apps.

Frequently asked questions

Why does my phone beep for no reason?

Most often, an unread, snoozed or repeated notification sounds again, or an emergency alert that was never cleared keeps sounding. Reminders and system sounds also beep without a visible message. On Android, the notification history shows which app made the sound.

Why does my phone beep when I charge it?

The charging sound is an option on Pixel and Samsung phones, and you can turn it off in the sound settings. If an alert shows up too, check the cable, the adapter and the port, or a liquid detection on iPhone.

Is a phone that makes strange noises being tapped?

Nothing says so: no official source lists random beeps as a sign of eavesdropping. Apple warns the rare people targeted by spyware individually, and never asks them to click a link or give a password; check at account.apple.com. On Android, run Play Protect and read our article on the HACKED notification from an app.