We have talked about encryption in quite a detail before, discussing why you should encrypt or not encrypt your SD card. The feature is made available by some OEMs although it is not a part of Android originally. Stock Android only lets you encrypt the phone memory. Encrypting your SD Card has one major disadvantage, that not even you, the owner, can read the contents on any other device. But why encrypt the entire SD card? What if there was a way to encrypt only certain files? That’s exactly what we’re going to show you – how to encrypt and decrypt files on Android.

But again, there’s one minor disadvantage. If you encrypt your SD card using your smartphone’s OEM provided feature, like on Samsung Galaxy devices, you can still access the photos or music stored on the card via any gallery or music app as long as the SD card is in the same device. Encrypting specific files, however, requires the use of third-party apps and this hides those files. Meaning you won’t be able to see those photos or videos on any other app but the encryption app.

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Now that you know what you’re getting into, let’s get to it. We will be using an app called Hide Files – Andrognito which uses AES 256-bit military grade encryption algorithm to securely safeguard your files. So the first thing you have to do is install the app from the Google Play store.

Hide Files - Andrognito Price: Free

Encrypt and Decrypt files on Android using Andrognito

  1. Launch the app and tap Sign me up. Enter your name, email address and password just like any other sign up you have ever done. Tap Register when done.
  2. You will then be asked to enter a PIN or pattern. You can choose to keep using your password but since your password is probably something quite long you might not want to type it out every time you wish to access your encrypted files.
  3. Pressing the  button brings up a few options. Select the type of files that you want to encrypt and hide.
  4. Select the images just like you would on any other app. The app also supports long pressing and then dragging to select multiple images. Tap the tick mark on the top when you’ve selected the files you want to encrypt. Press the button to confirm your selection.
  5.  You’ll be shown some information about the files, tap again on the  button and the app will begin encrypting the files. Encryption is pretty fast but can take a while depending on the size and number of files you select.
  6. Your encrypted files are neatly organized into different tabs that you can scroll through by swiping left and right. There are various sorting options as well. The next time you open the app it will require the PIN, pattern or password you entered. You can also encrypt a file directly from the app that you’re viewing it on using the Share option.
  7. Decrypting a file is even easier. Just long press on the file to select it, select multiple files if you wish and just tap the lock icon on the top right. Confirm by selecting YES and the selected files will be decrypted, placed back where they originally were on your phone.

The app even lets you create different vaults to organize your files from Settings>Vault. There are quite a few options in the settings as well if you wish to explore including a Theme Manager which lets you completely change the look and feel of the app. It’s a welcome feature considering you might be spending a lot of time with the app if you use it extensively. There’s also a cloud sync option which as the name suggests syncs your encrypted files to the cloud so yo can then access them using any device but it is a paid feature. You can upgrade to the pro version for just $3.7.

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Overall we really like the app. The UI is quite awesome and the app itself guides you through each step, the animations are really cool. But what’s a cool app when it can’t function right? Fortunately, that is not the case here. We’ve tested version 3.2 of Andrognito for almost a day and it works as it promises. There’s one key feature that we couldn’t find and that is the option to select storage. This means anything that you encrypt gets stored on the internal storage of your phone and this can fill up space pretty fast. Other than that it is a really neat, well-polished app targeted towards the average user while still packing some advanced features.

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