While it may not have really taken off in the U.S., WhatsApp is easily one of the most popular ways to communicate across the world. It has more than two billion users worldwide and is the leading ...

You can add contacts to WhatsApp by manually entering them in Chats, or scanning the QR code from their WhatsApp profile. You can also import contacts from your phone to WhatsApp. When entering ...

You can preview your calendar, to-do list, weather forecast, and more from your iPhone's home screen. Here's how to redesign the home screen to personalize your phone ...

How to make a killer contact poster. Image: D. Griffin Jones/Cult of Mac Contact Posters let you customize how your Apple contact card looks to other people when you call them. If they have your ...

You can access your contacts in Gmail on the web, or the Contacts app for Android. In the Contacts app, you can add contacts one at a time or enter multiple email addresses at once. To delete a ...