How can I tell if someone went through my phone?

You left your phone on the table at a party. Or your partner had it for “a second” while you were in the shower. Now something feels off: a chat you never opened shows as read, or the phone is warmer than it should be. Phones do not keep a simple list of who opened what, but they keep records that come close. This page shows where to look on iPhone and Android, and how to know next time. We checked each step against Apple’s and Google’s own pages on 2026-10-08.

On iPhone: Screen Time

Screen Time records when the phone was in use and which apps were open. Apple’s weekly report shows “your most used apps, how often you pick up your iPhone and other devices, and more.”

1. Open Settings and tap Screen Time.
2. If Screen Time is off, it holds no history. Turn it on with Manage Screen Time, then Turn On App & Website Activity, for next time.
3. If it is on, tap Daily Average.
4. Tap Day and swipe left or right to the day in question.
5. Look at the time chart for use while you were away. Scroll down to Pickups and Notifications.

A spike in Photos, Messages or Settings at a time you were not holding the phone is the clearest sign. If Share Across Devices is on, Apple says Screen Time also combines use from your iPad and Mac, so check which device the use came from.

On Android: Digital Wellbeing

Google says Digital Wellbeing can show “how often you unlock it and how long you use each app.”

1. Open Settings and tap Digital Wellbeing.
2. The chart shows today. Tap it for details.
3. Check Screen time (which apps were on screen and for how long) and Times opened (how often you unlocked the phone and opened each app).
4. Tap an app for more detail.

Google notes that “some of these steps may vary based on your device.”

Signs inside your apps

Some signs need no settings at all:

• Messages marked as read that you never opened, in Messages, WhatsApp or email.
• A changed photo grid. Photos you did not favorite, or a photo moved to a new album.
• A browser tab you did not open, or a search you did not make.
• Apps open in the app switcher that you did not use today.

None of these proves much alone. Together with a Screen Time spike, they tell a clear story.

Check who else can see your account

A person does not need your phone to read your photos if they are signed in to your account somewhere else.

• iPhone. Go to Settings, Privacy & Security, Safety Check, and tap Manage Sharing & Access. It reviews the people you share with and the devices on your Apple Account.
• Google. Open your Google Account, tap Security & sign-in, then Manage all devices. Tap a device you do not know and tap Sign out.

If the same person keeps checking, or seems to know where you go, read is someone tracking my phone. The Coalition Against Stalkerware says a common sign of monitoring is that the other person knows too much about what you do on your phone.

Make the next look harder

Start with the passcode. If the person knows it, nothing else on this page holds. Our page on a partner who knows your passcode shows how to change it, expire the old one and check Face ID. For the moments you hand the phone over on purpose, see how to lend your phone. To keep some apps off the home screen, see our guides to hiding apps on iPhone and Android.

Know next time with York Vault

The phone’s own records are rough. York Vault keeps an exact record for what is inside it, and all of it is free:

• A log of attempts. Each wrong code makes an entry with the time, the number of wrong codes and the lock type. You can also keep the code that was typed.
• A photo with the front camera after a wrong code, if you turn it on. iOS shows its green camera dot while it does this. See wrong-code photos.
• A banner at your next open. For example “3 wrong codes since your last visit”, with a link to the entries.
• A notice on your other devices, with neutral text, within about 1 minute.
• Waits after wrong codes. After 5 wrong codes, York Vault makes the person wait, from 30 seconds up to 1 hour.

York Vault opens with its own code, not the phone passcode, so a person who knows your passcode still meets the York Vault lock. See lock options. A neutral icon means a person who goes through your phone may not notice York Vault at all. And if someone makes you open it, a cover code opens a second, ordinary library where the attempts log never shows.