How to Get Into Someone's Facebook Messenger-Full Guide (2025)

Ever since Facebook launched Messenger as a standalone app in 2011, it's become one of the globe's most popular messaging platforms and has over 1.3 billion monthly users. It's where people chat, share photos, and sometimes even post more than they mean to.

But what if you have a legitimate reason to take a look at what someone's been talking about? Maybe you're a parent concerned about your child's online security, or you're trying to restore trust in a relationship.

Whatever your reason is, knowing how to access someone’s Facebook Messenger (ethically and responsibly) can give you peace of mind.

In this guide, you'll learn about how to get into someone's messenger on Facebook as well as step-by-step guidance. We'll walk you through everything you need to know, so you can make informed decisions when it comes to privacy, safety, and trust.

Part 1. Why People Want to Access Someone's Facebook Messenger

Here are three common examples that explain why you might want to learn how to get into someone's Facebook messenger.

Trust issues in a relationship

If you’ve noticed your partner acting distant, hiding their phone, or suddenly becoming secretive, you might start wondering what’s going on behind the screen. Messenger can sometimes hold the answers—whether it’s just harmless chats or something more serious.

Parental control and child safety

Parents today face a tough job—kids are online constantly, and not every message they receive is harmless. If you're a parent, you might want to look through your child's Messenger to make sure they're not being bullied, or talking to strangers.

Suspecting infidelity

If you're noticing signs like late-night texting or sneaky behavior, it's understandable that you're suspicious. Many people use Messenger in the hopes of finding out if they are being cheated on by someone else.

Part 2. How to Get Into Someone's Facebook Messenger

When you are trying to read another person's Facebook Messenger, you need to be aware of the right methods to use.

Now let's discuss four of the most popular ways to get access to a person's Facebook Messenger account.

Way 1. Monitor Messenger with a parental control App – Msafely

Msafely is a powerful monitoring app designed for people who need secret access to someone’s digital life—especially on platforms like Facebook Messenger.

What makes Msafely stand out is how quietly it operates. Once set up, it runs in stealth mode, leaving no trace on the target phone. It doesn’t drain the battery, doesn't appear in the app drawer, and won’t send out suspicious notifications.

Msafely works on both Android and iOS devices and offers a seamless, user-friendly experience for anyone who isn’t tech-savvy but still needs full access to digital activity.

Advantages of Msafely in monitoring someone's Facebook Messenger

Read private Messenger chats

Access all sent, received, and even deleted Facebook Messenger messages. Msafely keeps a log of all conversations, giving you a clear timeline of communication.

See hidden Facebook profile photos

Even if someone has locked their profile or uses privacy settings, Msafely can reveal private or hidden profile pictures.

Monitor Facebook Messenger stories

You can view every Facebook Messenger story your target uploads—whether it’s shared publicly or only with specific friends.

Track Messenger call activity

See all Messenger voice and video calls, along with timestamps, duration, and contact names.

Location tracking through Facebook activity

Pinpoint the person’s real-time location based on their Facebook check-ins or activity, and match that with GPS tracking.

The Msafely demo of Facebook Messenger monitoring.

Follow these steps to use Msafely to access Facebook Messenger:

Step 1. Go to the Msafely website and register for a free account.

Step 2. Choose between Android or iOS, and follow the setup instructions to link the phone.

Step 3. Select a subscription plan that best fits your needs and features.

Step 4. Log into your Msafely Control Panel and begin viewing Facebook Messenger messages, calls, stories, and more in real time.

Way 2. Reset the Facebook account password

You can also get into someone’s Facebook messenger by resetting the person’s Facebook password. This method requires more effort and access, but it can work—if done correctly and ethically.

What you’ll need:

Physical access to the person’s phone or email (at least temporarily).
Their Facebook username or email address.

Here are the steps to reset someone’s Facebook account password:

Step 1. Click "Forgot Password?" on the Facebook login page.

Step 2. Enter the Person’s Email or Phone Number linked to the account.

Step 3. Select How to Receive the Reset Code (via email or SMS).

Step 4. Retrieve the Code: This is where you’ll need access to the target’s device or monitoring software to view the code.

Step 5. Enter a New Password and login to their account.

Step 6. Access Messenger: Once inside, open Facebook Messenger to view all messages.

⚠️ Important note

Resetting someone’s password without their consent can violate their privacy and Facebook’s terms of service. This method should only be used when you have legitimate reasons and legal grounds to do so—such as parental control.

Way 3. Use their phone lock screen password

If you do have the lock screen password to another person's phone—or can obtain it—then this method can give you access to their Facebook Messenger directly without any extra tools.

These are the requirements for this method;

The phone’s lock screen password, pattern, or biometric access (like Face ID or fingerprint).
Physical access to the person’s phone, even if it’s just for a few minutes.

It's a straightforward way of seeing what they've been messaging without having to download anything or access another device.

Steps to use someone’s phone lock screen password to getting into their Facebook Messenger:

Step 1. Enter their password, fingerprint, or Face ID to get into their device.

Step 2. Locate the Messenger app (it usually stays logged in) and tap it.

Step 3. Browse their inbox, check individual conversations, and explore message requests or hidden chats.

Step 4. Be sure not to send messages or change settings that could tip them off.

This method works best if you already have access to their phone, like a partner, child, or family member whose device you occasionally borrow.

Way 4. Log into Messenger on a different device

Another way to access someone’s Facebook Messenger is by logging into their account from a separate device. This is possible if you already know their Facebook login credentials (email and password). Once signed in, you’ll have full access to their messages, just like they would on their own phone.

Note these requirements;

The person’s Facebook login details (email/phone number and password).
A second device such as your phone, tablet, or computer.
An internet connection.

Steps to log into somneone’s Messenger on another device:

Step 1. On the second device, go to the App Store (iOS) or Google Play Store (Android) and download the Messenger app.

Step 2. Launch the app and tap “LogIn” instead of creating a new account.

Step 3. Type in the email address and password linked to the Facebook account you want to access.

Step 4. Once logged in, you can read, send, and manage messages just as if you were the original user.

⚠️ Important note

If two-factor authentication is turned on, you may need temporary access to their phone or email to get the verification code.

Part 3. What is the Best Way to Get Into Someone's Facebook Messenger

Now that you’ve seen the four main ways to get into someone’s Facebook Messenger, one thing becomes obvious—Msafely offers the most complete, secure, and discreet experience.

Here’s a quick comparison to help you decide:

Method	Hidden monitoring	Tracks Messenger activity in real-time	Privacy & security	Best for
Msafely (Monitoring App)	✅ Yes	✅ Yes（chats, profile, stories, calls and location）	✅ Encrypted data, discreet access, secure dashboard	Long-term, discreet monitoring of Messenger
Reset their password	❌ No	❌ No	❌ Risk of detection, may trigger Facebook alerts	Temporary access (if you can bypass 2FA)
Use their lock screen password	❌ No	❌ No	❌ Easily detected, privacy breach risk	Quick checks when you have the device
Log into Messenger on new device	❌ No	❌ No	❌ May trigger security alerts, visible login	Occasional use when you know login details

From the table, it is clear that when it comes to privacy, security, and total control, Msafely stands above the rest. It's built to protect your tracking activity while giving you real-time updates without raising suspicion.

Part 4. FAQs

Q1. How can I reset someone's Facebook password?

To reset someone’s Facebook password, you’ll need temporary access to their email or phone to retrieve a verification code, and then set a new password.

Q2. What happens if I use a person’s lock screen password to access their Messenger?

Using their lock screen password allows you to open Messenger directly but is only useful when you have physical access to the phone.

Q3. Can I monitor Facebook Messenger without the person knowing?

Yes, Msafely allows you to monitor Facebook Messenger without the person knowing, as it operates in stealth mode.

Q4. Can I access hidden Facebook Messenger chats?

Yes, it’s possible to access hidden or archived Facebook Messenger chats if you have the right tools or permissions to view them. Msafely can help you do this.

Q5. Do monitoring apps track Facebook Messenger messages in real time?

Yes, monitoring apps like Msafely track Facebook Messenger messages in real time and provide access to past conversations, media, and call logs.

Part 5. Conclusion

Choosing the right method to access someone’s Facebook Messenger depends on your situation, but privacy, security, and ease of use should always come first. Many approaches require physical access or carry a high risk of detection, making them less practical in the long run.

Msafely stands out as the best solution because it offers discreet, real-time monitoring without needing direct access to the device. You get full visibility into Messenger chats, stories, and more—all through a secure, user-friendly dashboard.