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Travel Essential: KnowRoaming

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There's nothing worse than being stuck with an enormous cell phone bill when you've been traveling internationally. KnowRoaming aims to fix that with a "Smart Sticker" that you apply to your sim card (unlocked phone required), which activates your phone on the local network and rids you of any potential roaming charges from your home carrier. The sticker works alongside an app that allows you to fund your pre-paid balance, check rates, and connect your home phone number so your phone calls are forwarded to the new local numbers that you've purchased.

$35, KnowRoaming

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