Rent a MiFi Hotspot
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While there are benefits to losing your smartphone's data connection (like experiencing the wider world without constantly tweeting about it), travel is clearly better with some degree of internet access. That's the main reason to rent a MiFi hotspot, a broadband modem that creates a local wifi network – the pocket-size ones from Tep Wireless start at $7 per day, with a daily data cap of 150MB. But being able to Skype (without video, to avoid blowing that data cap) from virtually anywhere is a major side benefit.