Four tips for making calls with apps

If you have a good data plan, you can use messenger apps like WhatsApps to make international calls so you don’t get charged anything. – 123rf.com

More and more messenger apps are also offering calls in addition to messages, photos, emoji, videos or voice messages.

WhatsApp, Signal, Wire, Facebook Messenger and Skype all promise a cheaper, easier alternative to ­traditional phone calls. But what does anyone who wants to switch have to keep in mind?