Here’s a clear, informative piece covering how to appear online on Facebook from a Samsung Chat 335 (a classic feature phone with limited apps). The Samsung Chat 335 (also known as GT-C3350) is a QWERTY feature phone that runs Samsung’s proprietary OS, not Android. It has a built-in Facebook app (often called “Social Hub” or a Java-based Facebook client). Appearing “online” or “active” on Facebook from this device works a bit differently than on a smartphone, but it’s still possible.