SMS Lock Apps are a must when it comes to the protection of your private data. Hence, you must use a good SMS lock app for your mobile phone. This is because there is quite a lot of sensitive data on your SMS app and it requires protection from unauthorized usage.
Recommended – Lock Screen Apps
You do not want that sensitive data to in somebody else’s hands. These SMS lock apps will help you with the same and will also provide you the peace of mind. You will not have to worry all the time if you are using these SMS lock apps.
The apps that I have listed are all the official apps from the Google Play Store and the Apple App Store store. Hence, you need not worry about the authenticity of these apps. All you need to do is to install these apps and provide security to your private SMS data. You also can check out internet lock apps.
Top 10 SMS Lock Apps
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Message Lock
It is one of the best SMS lock apps you can use to keep your messages away from the reach of snoopers.It can lock not only your phone’s default text messages but also other messaging applications like Facebook Messenger, Instagram, WhatsApp, and so on.
This app is very useful in improving your phone security and apart from all the messaging apps, it can also protect your system applications like your phone book, photo gallery, etc. from intruders.
It will automatically click a photo from the front camera instantly if anyone tries to enter the wrong password and enter into your gallery or messages to check your private details.
Download From Google Play Store
Recommended – Block Messages And Calls App
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Message Lock (SMS Lock)
If you have got a lot of private messages of naughty chatting which you do not want your friends and family members to see then it might be a perfect option for you.This app is designed for Android users and it gives full protection to its users’ personal information which includes both text messages and multimedia messages. You can set any lock pattern to secure your messages.
It works smoothly from Android version 5.0 and later. The app size is very small so it does not occupy much of your device storage and it gets updated at regular duration with additional features.
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Black SMS- Protected Texts
This is a very popular app in the App Store used by thousands and thousands to keep their private messages and confidential documents secured and away from intruders and snoopers.I personally find this app to be one of the best SMS lock apps for iOS users. Black SMS is also free and is currently used by more than 170k people.
You can set a password or also use the fingerprint unlocking feature to protect your private files. This app is compatible with iOS version 10.0 and later.
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Private Message Box
This app works very effectively in keeping your secrets safe and secure from unwanted people.You can add any particular number from your contact list to Private Contact if you want to hide your conversations with them.
It has got a hidden mailbox without any icon so nobody else will get to know about you hiding your secrets. Apart from these benefits, this app has a lot of emoji characters stored in it which are very useful at times you want to share your feelings and emotions.
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Private Text Messaging + Secure Texting & Calling
This app is designed to give you a very good experience of hiding your conversations in the most secure way.It secures not only messages but also the phone numbers stored in your contact list and your call list by keeping it away from persons who want to see all of these personal details without your permission or in your absence.
You can completely rely upon this app as it will keep your personal photos, videos, contacts, documents, and messages completely secret. If someday your phone gets lost you need not worry about your personal data as nobody else will be having access to these files.
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TextU- Private SMS Messenger, Call App
TextU is yet another amazing application designed to keep your messages secure from snoopers. It enables you to block messages of any person that you do not want to receive any more and also those messages that you get from marketers.It has got the option of backup and restores so that your message is protected. Another benefit of this app is that it does not let anybody take a snapshot of your messages.
It also supports calling and clearing private calls from your call log. The app contains numerous emojis and emoticons which you can use while texting others.
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Message Locker
This app lets you set a PIN or Pattern lock to your messages and protect it from unwanted or uninvited people who always try to look into your personal messages.It will keep safe all of your messaging apps like Email, WhatsApp, Skype, or Apps Like Snapchat. You can use the same Pin or Pattern lock for all these apps. You need not worry if you have forgotten your Pattern or the PIN for unlocking the same.
This is because you can easily answer the security question that you have set earlier, unlock the apps, and change the PIN/Pattern as per your convenience.
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Messenger and Chat Lock
This app is designed to protect all your chats from snoopers and it will also click an instant selfie of those who are trying to unlock your message applications by entering wrong passwords so that you can easily recognize the person.You can also use this app to secure your photos and videos which are stored in your phone’s gallery. It enables you to set an auto-lock time so that you are free from entering the PIN again and again for locking and unlocking the apps.
Another benefit of this app is that it does not consume much of the system’s resources and takes a very minimum amount of your device storage. You can also upgrade this app to a pro version for additional benefits.
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CoverMe Private Text & Call
This app is designed particularly for Apple device users to safeguard their messages from the reach of spying eyes.It enables you to send messages and make calls from private numbers depicting another country. It is very easy to use, you just need to shake your phone to hide and lock your private messages, and also act as a video vault app, photos, or any other documents.
You can also send disappearing messages which means that the message will automatically disappear once the recipient has read the message. This app works compatible with iOS 9.0 later.
- It is an amazing app that contains many methods to hide your messages from others. Apart from that it also enables you to change the font and background as per your preference.
You can block any messages from unwanted people or advertising agencies which keeps on disturbing repeatedly. The unique feature of this app is that you can set two passwords at a time.
Out of which one can deceive the other person trying to look into your messages.
There are beautiful color themes stored in this app to make it look more attractive. You can choose your own message tone as you like.
It is one of the best SMS lock apps you can use to keep your messages away from the reach of snoopers.
If you have got a lot of private messages of 
This is a very popular app in the App Store used by thousands and thousands to keep their private messages and confidential documents secured and away from intruders and snoopers.
This app works very effectively in keeping your secrets safe and secure from unwanted people.
This app is designed to give you a very good experience of hiding your conversations in the most secure way.
TextU is yet another amazing application designed to keep your messages secure from snoopers. It enables you to block messages of any person that you do not want to receive any more and also those messages that you get from marketers.
This app lets you set a PIN or Pattern lock to your messages and protect it from unwanted or uninvited people who always try to look into your personal messages.
This app is designed to protect all your chats from snoopers and it will also click an instant 
This app is designed particularly for Apple device users to safeguard their messages from the reach of spying eyes.
It is an amazing app that contains many methods to hide your messages from others. Apart from that it also enables you to change the font and background as per your preference.
The above-mentioned apps are some of the best SMS Locker apps among the many that help you keep your private conversations private.
Lock apps have really helped me a lot.
but I keep changing these apps from time to time