Check the list of connected devices
One of the easiest ways to find out if your phone is paired with another device is to check the list of connected devices in the settings of your smartphone. Depending on the make and model of your phone, the steps may vary slightly, but in general, you should follow these steps:
- Open the application of Configuration on your phone.
- Look for the section of Connections o Connected devices.
- Review the list of devices that appear. If you see a device that you don't recognize or remember connecting, your phone may be paired with another device without your consent.
Inside look: Check installed apps
Another way to know if your phone is paired with another device is review the installed applications on your smartphone. Some applications, such as instant messaging or social networks, allow you to link your account with other devices. If you suspect that your phone is paired with another, check the installed applications and look for those that allow pairing with other devices. If you find any suspicious apps or apps that you don't remember installing, your phone may be paired with another device.

Check your Google account
If you have a Android phone , you likely have a Google account linked to your device. This account allows you to access various Google services, such as Gmail, Google Drive, and Google Photos, from any device. If you suspect your phone is linked to another phone, you can check your Google Account to see which devices have access to it. To do so, follow these steps:
- Open the application of Configuration on your phone.
- Look for the section of Accounts or Users and accounts.
- Select your Google account.
- Review the list of devices that have access to your account. If you see a device that you don't recognize or remember authorizing, your phone may be paired with another device.
Shields against intruders: Use security applications
There are security applications which can help you detect if your phone is paired with another device. These apps scan your phone for suspicious or malicious apps that may be linked to others. Some of the most popular security apps are Avast Mobile Security, McAfee Mobile Security y Norton 360. If you use one of these apps and detect any suspicious activity, your phone may be paired with another device.
Suspicious signs: Interpret the phone's language
In addition to the methods mentioned above, it is important to be aware of unusual signs that may indicate that your phone is paired with another device. Some of these signs include:
- Un unexplained increase in mobile data usage, which could indicate that someone is using your phone to send and receive information without your knowledge.
- A faster decrease in battery life, even when you are not actively using the phone, which could indicate that there is an app in the background consuming power.
- Unusual activity, such as calls, messages, or emails that you don't recognize making, which could indicate that someone has access to your accounts without your permission.
If you notice any of these signs, it's important to investigate further and take steps to protect your privacy and security.

What to do if your phone is paired with another device
If after following the steps above you discover that your phone is paired with another device without your consent, it is important that you take steps to protect your privacy and security. Some of the actions you can take are:
- Disconnect the paired device: If you have found a paired device that you do not recognize, disconnect it immediately. To do this, go to the connected devices section in your phone's settings and select the option to disconnect or unpair the device.
- Change your passwords: If you suspect that someone has accessed your phone without your consent, it is important that you change the passwords for all your accounts, including your Google account, your social networks and your instant messaging applications.
- Update your software: Keeping your phone up to date with the latest software can help protect you against security vulnerabilities and malware attacks. Make sure your phone has the latest operating system and security updates installed.
- Use a security app: As we mentioned earlier, security apps can help you detect and remove suspicious or malicious apps that may be linked to other devices. Consider installing a reliable security app on your phone to keep it protected.
It's important to keep an eye out for any suspicious activity on your phone and take steps to protect your privacy and security. By following the steps we have mentioned and taking the necessary measures, you can ensure that your phone is not paired with another device without your consent.
I am Sebastián Vidal, a computer engineer passionate about technology and DIY. Furthermore, I am the creator of tecnobits.com, where I share tutorials to make technology more accessible and understandable for everyone.