How to Use Google Hangouts Dialer to Make Wi-Fi Phone Calls Make sure you have a reliable wifi connection, you can boost your wifi connections with these devices if needed.

There’s an easy way to get zero roaming fees, inexpensive internet service and cheap phone calls when you travel. The trick is the SIM card, a tiny, removable chip, inside your phone.

Note that the iPad requires a micro-SIM card. You can cut a full-size SIM down to micro-SIM size using a specialist tool or household cutting equipment but proceed at your own risk (see Resources).