Check the below tutorial to learn how to download and install,
How To Download Signal Old Version
There are many people who want to use the old version because the latest version does not support on their Android OS or they do not want any latest features. Right now you can use the older version on your mobile device if you want without any hassle.
Let’s learn now how to get the oldest version,
1st Task: Go to the Phone Settings and search for the Unknown Sources option.
2nd Task: Once found, enable the option to install 3rd party apps and games.
3rd Task: Download Signal Old Version APK from the above for Android smartphone.
4th Task: Once the download is complete, open the APK file and press the Install button.
5th Task: Once the installation process is complete, launch it.
Enjoy it now without any problem.