In most cases, data stored on your android device lost due to the uncontrollable reasons. You may want to recover deleted viber message history onto your device and no backups available. In this case, we recommend you to get help from the 3-rd party data recovery application to do the job.

Android Data Recovery
Android Data Recovery (Android Data Recovery Mac) is a great data recovery tool to recover viber messages on android. It is compatible with a broad variety of android smartphones and tablets, including the latest Samsung Galaxy S7, S7 edge, S6, S6 edge, S5, S4, Note 4, Note 5, Note 7, HTC One M9, M8, Sony, Motorola, Huawei, LG etc. In addition, it is not limited to recover Viber messages, it can also restore Viber call log, photos, videos and more files on your android in a few steps.
- Run the program and connect your device to computer.
- Access and scan viber messages stored on your android device.
- Preview & recover deleted viber chat history on android.
Part 2. Retrieve Deleted Android WhatsApp Messages
WhatsApp allows you to create a manual backup from WhatsApp > Menu Button > Settings > Chat Settings > Back up chats. This manual backup file will normally be saved as “msgstore.db.crypt7” in your /sdcard/WhatsApp/Database folder. If you have a backup, you can easily retrieve deleted WhatsApp messages on Android by follow these steps:
1. Navigate to the WhatsApp Database folder and decide which backup file you want to restore.
2. Rename that file from “msgstore-YYYY-MM-DD.1.db.crypt7” to “msgstore.db.crypt7”.
3. Uninstall and re-install WhatsApp, choose “Restore” when prompted, you will be able to see your restored messages.

What if you delete very important WhatsApp chat messages without a backup? Never fret. We recommend Android WhatsApp Recovery Mac. This tool scans your Android device and extracts the WhatsApp messages. Have it installed on your Mac and recover deleted WhatsApp messages from Android on Mac.
Download Links:
https://goo.gl/LCyvjb
https://goo.gl/RHf9I5
Related Video:
Three Ways to Retrieve Deleted WhatsApp Messages on Android
https://youtu.be/1Odbfa8T46w