When comparing Trillian vs Facebook Messenger Lite, the Slant community recommends Trillian for most people. In the question“What are the best Facebook messenger alternatives for Android?” Trillian is ranked 3rd while Facebook Messenger Lite is ranked 8th. The most important reason people chose Trillian is:
You can set up a dedicated server to hold your communications. Great for businesses that want to build their own infrastructure.
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Pros
Pro In-house server support
You can set up a dedicated server to hold your communications. Great for businesses that want to build their own infrastructure.
Pro Multiple networks in one place
Among them Yahoo!, Facebook, Skype, Google, AIM, ICQ, XMPP, MSN. You can have multiple accounts associated with each service.
Pro Group chat
Trillian to Trillian group chat is available.
Pro Gets features while staying small
It has received several features the full app has (stickers, voice and video calls) while the app size stays about the same.
Pro Can run on slow phones
Being light (installed it takes up 6-10 MB of memory) and fast, Messenger Lite can run on phones with Android 2.3 and up.
Pro Works on all networks
This app was made with 2G networks and areas with slow or unstable internet connections in mind. If you lose the connection, your messages will be delivered when you have signal again.
Cons
Con Supports all dead services.
Con No secret chats
Doesn't support end-to-end encrypted "secret chats" like the full app.
Con Doesn't support deactivated accounts
The full app has a feature where the user can deactivate their Facebook profile, but continue using Messenger. Lite lacks that feature.