To see which devices are logged into your accounts, check the security settings of each major service. For Google, go to myaccount.google.com/device-activity. For Apple, go to Settings > [Your Name] on an iPhone or Mac. For Facebook, check Settings & Privacy > Security. These pages allow you to view active sessions and sign out of devices remotely.
See devices with account access
Go to Settings > Connections. Tap Bluetooth. Check the paired devices.
To see connected devices, check your router's admin page (for your whole network), use command-line tools like arp -a on Windows/Mac, or look in your operating system's settings (like Bluetooth & devices on Windows, or Apple ID settings on iOS/macOS) for peripherals and account logins; apps like Fing offer mobile network scanning too.
To see if someone has access to your iPhone, check for unusual behavior (fast battery drain, overheating, high data use, unknown apps/pop-ups) and review settings and devices like unknown devices signed into your Apple ID (Settings > [Your Name] > Devices) or unrecognized profiles (Settings > General > Profiles/Device Management), and use the built-in Safety Check (Settings > Privacy & Security > Safety Check) for managing sharing.
To check if someone else is using your Apple ID, review the device list in your Apple ID settings on your iPhone/iPad (Settings > [Your Name] > scroll down) or Mac (Apple menu > System Settings > Apple ID) to find and remotely sign out unfamiliar devices, and look for unrecognized account activity like unexpected 2FA codes, password changes, or strange purchases, then change your password immediately if you see anything suspicious.
Explore these 12 indicators of compromise and steps to take if a breach is suspected.
Yes, someone can access your iPhone without you knowing, though it's generally difficult without physical access, shared Apple IDs, or advanced malware (spyware/stalkerware) via phishing, public charging, or exploits, often requiring sophisticated attackers or specific vulnerabilities. Common signs include rapid battery drain, unusual activity, strange pop-ups, or unauthorized access to synced data like messages or photos if an Apple ID is shared, but subtle signs of advanced spyware can be hard to spot.
The easiest way to check who is using your WiFi is by using a network scanning tool like Fing. Fing is the #1 network scanner that quickly identifies all devices connected to your WiFi, whether you're using a mobile device or a desktop.
When you're signed in, you can review devices that have recently accessed your account. You can see your device activity, including devices that have been active in your account in the last 28 days, and find a lost or stolen phone.
The easiest way to see what's connected to your network is through your router's web interface:
Method 1: Using AI Life App
Select the device you want to blocklist from the list of Connected devices (or go to Devices > Connected devices), click Allow button, then touch OK in the pop-up dialog box to blocklist the corresponding device and prevent it from accessing your Wi-Fi network.
How to Tell if Someone Has Remote Access to Your iPhone
To check logged-in devices, visit the security settings for your specific account (Google, Apple, Microsoft, etc.) in a web browser or app, find the "Your Devices" or "Devices" section, and review the list to sign out any unrecognized devices remotely. This process allows you to see where you're signed in and secure your account by removing unauthorized access, often recommending a password change afterward.
Use your iPhone or iPad to find where you're signed in
Tap Settings and tap [your name], then scroll down to see a list of devices.
View and remove your devices that are associated with your Apple Account for purchases