Free group messaging. It's like a private chat room for your small group. Have as many as you want, and it's always free. Now, you can coordinate with coworkers, organize a game night, and keep in touch with family all in the same place.
Contrary to what you might think (or have been told), leaving your phone or laptop plugged in all the time is not bad for its battery. That's because your gadgets, the batteries in them, and the chargers you attach them to are actually pretty smart about the way they do business.
Myth 5: Don't charge your phone until it's completely dead. The truth: It's better to charge your phone every day than to do a  deep charge  from time to time. Lithium-ion batteries, like the kind used in Samsung and Apple products fare better when they're charged. If you constantly let them drain to 0%, they become unstable.