Many applications do not go through rigorous quality assurance testing prior to being available for download. Older versions of Snapchat contained many security flaws. Although the application has undergone serious improvements, it is still possible to find devices running older application versions prior to 3.0.4.¹

In older versions of Snapchat, look for files appended with the “.nomedia” file extension in the directory com.snapchat.Android/cache/received_image_snaps.  Currently, there are still applications that will “remove” image files using that same concept of renaming the file extension.

Although these same exploits may not apply to more current versions of the application, it is important to thoroughly review the files within the application folder for user content.

In more current versions of the application, it is possible to recover chats that were saved to a temp directory because they did not send due to lack of a proper cellular or WIFI signal.

Reference:

[1] https://for585.com/snapchat