While Snapchat is available in most countries, it’s blocked in a select few such as China. If you’re traveling to a country in which Snapchat is censored, you can use a VPN to unblock it. This involves connecting to a server in any country in which Snapchat is freely available (such as the US or UK, for example). Note that you may only be able to do this if Snapchat is already installed on your device as you may not be able to download it from some countries.