With a solid signal, the sound quality is much better than a standard phone connection but with a weak signal, the video and audio can be choppy and freeze up. The biggest hurdle travelers face with Internet calling is finding a Wi-Fi signal that's strong enough for a smooth call. FaceTime, built into iOS devices, works especially well for contacting other Apple users. The Hangouts app is preloaded on Android devices, and anyone with a Google account can install it for free (as a plug-in on their computer's browser, or as an app). Skype and Viber are available for most devices, including PCs, Macs, Apple's iOS devices, and Android and Windows phones. Skype, Viber, FaceTime, and Google+ Hangouts let you make both voice and video calls. Although it's possible to use these apps over a cellular network, doing so when traveling can burn through your data allowance, especially if you're making a video call. To use these apps for free, all you have to do is log on to a Wi-Fi network, then connect with any of your friends or family members who are also online and signed into the same service. Many travelers use a mix of these apps, based on what their friends and family are already using at home. A cheap way to stay in touch while traveling is to use Internet calling/messaging apps, such as Skype, Apple's FaceTime and iMessage, or Google+ Hangouts, to make free calls online or message to your heart's content.
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