It's easy to use Google Hangouts on your iPhone to start large group chats. Here's what you need to know to do it.

WhatsApp today introduced a feature that lets users create groups on the instant messaging app without needing to name them — an update over the existing way that requires users to specify group names ...

You can use WhatsApp on an iPhone to send messages, share photos or videos, make calls, and more. Here's what you need to ...