It might also be worth checking out the local cell/mobile providers as these can be quite cost effective.
Most mobile/cell providers now offer travel passes to help manage your international roaming costs (which, let’s face it, are expensive!). For a few dollars a day, you’ll have access to data, which means you can log into your apps (like Skype, email and WhatsApp) when you’re out of WiFi zones and quickly get in touch with someone – a friend at home, someone in your group, or the police – if you need to. It might also be worth checking out the local cell/mobile providers as these can be quite cost effective.