Unlike the Android APK or iOS IPA, a JAR (Java Archive) file was the standard distribution format for applications on phones from Nokia, Samsung, Sony Ericsson, BlackBerry (pre-OS10), and LG made between roughly 2005 and 2012.
To use Facebook Messenger, you'll need to have a Facebook account. If you don't have one, create a new account on Facebook.com. Once you're logged in, you can access Messenger by clicking on the "Messages" icon on the top navigation bar. facebook messenger.jar
However, the actual application—the code and the resources (images, text)—is stored inside the file. If you download facebook messenger.jar , you have the complete application. Unlike the Android APK or iOS IPA, a
If you’ve recently stumbled across a file named facebook messenger.jar on an old hard drive, a backup CD, or a legacy device forum, you’ve found a piece of mobile internet history. Before smartphones dominated the world with iOS and Android, there was Java ME (Micro Edition). The .jar file extension is the hallmark of that era. Once you're logged in, you can access Messenger
This specific file was for computers. You could not double-click it on Windows or macOS to chat with friends. Instead, users had to transfer this file to their feature phone via Bluetooth, USB cable, or download it directly via WAP (Wireless Application Protocol) browser.