imo instant messenger for Android offers free video chats and instant messaging with friends or family, no matter what network or device they use.

imo instant messenger is a lightweight, no frills messaging app. From what I can tell, the app appears to be absolutely free to use, however, the biggest downside is the functionality is a little thin and could use to be developed further. The app requires you to input your telephone number and confirm a verification code, which enables the messaging capabilities. The process took only a couple minutes.

The interface is very pared down. I thought the fonts were overly small, and I didn't see a way to make them larger. The color scheme is pretty bland, with no real personalization tweaks available. The upsides are, you can send unlimited messages, voice and video calls, all for free. The connections seemed consistent and relatively fast, with only nominal buffering issues.

Setting up group chat with friends and family is seamless. The app accesses your gizmo's contacts, with decent search capabilities, though somewhat laggy. The app also offers the usual stickers to add a little fun and flair to your messaging. Calls and chats are encrypted and the app displays well in portrait mode, though I think it would be hard to read the text on smaller screens.

imo instant messenger is nice overall but a tad sparse. It functions solidly but I've used better.