Locked SMS Description

Locked SMS is an application that allows you to encrypt your SMS/text messages to anyone. Normal SMS messages are set over the communication channel in plain text. Thus, subject to potential exposure of you messages to anyone "listening" on the channel.

Locked SMS uses hybrid encryption with both RSA and AES algorithms. This is the "gold standard" for secure communication. It allows for high speed symmetric encryption with AES and key-distribution safety of asymmetric encryption.

You can choose whether or not to encrypt your messages. The control of this is completely on the user. The encryption requires a key exchange between users if you want to use hybrid encryption. This involves sharing a public key. However, no one can perform decryption with only the public key. The secret key is kept secure on the phone. Your messages are not accessible to anyone except the owner of the phone. When receiving an encrypted message, it is up to the user to leave it encrypted or not after decrypting and reading the message (messages can also be completely deleted). Also, none of the user data is stored or seen anywhere else. There is no backup of any information (ie: on Google) and no data is cached or stored anywhere where else. Hourglass Software does not store any data or has access to any of the data.

In the end, the user has full autonomy of your SMS communication privacy.
You can also choose to have Locked SMS be your primary/default SMS application or secondary alongside the phone's existing SMS application.

Instructions to use Encryption feature:
1. User A goes to "New Conversation" screen (plus button at bottom right)
2. Enter User B phone number
3. Click "Send Key"
4. User B gets SMS message with link
5. User B clicks link in SMS to save key
6. User B does the same steps to send key to User A to save
7. Both users can now choose to encrypt messages to each other
(Same process for using encryption for other users/contacts)

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Is Locked SMS safe for my device?

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Yes, Locked SMS follows the Google Play content guidelines to ensure safe use on your Android device.

What is an XAPK file, and what should I do if the Locked SMS I downloaded is an XAPK file?

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A file with .xapk extension is a compressed package file. It is a container file format that incorporates APK and additional associated files required for the installation. The XAPK format was introduced to package the APK file and OBB file together for a seamless delivery and installation process. XAPK format can help reduce the package size of application. On mobile phones, users need to install the XAPK installer first, and then install XAPK files through that installer. You can find the installer here:https://apkcombo.com/how-to-install/. But on PC client, you just need to put the file on LDPlayer.

Can I play Locked SMS on my computer?

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Yes, you can play Locked SMS on your computer by installing LDPlayer, an Android emulator. After installing LDPlayer, simply drag and drop the downloaded APK file into the emulator to start playing Locked SMS on PC. Alternatively, you can open the emulator, search for the game or app you want to play, and install it from there.

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