goTenna
Use your smartphone to communicate when you don't have service
goTenna is a sleek, rugged device that pairs wirelessly with your smartphone, allowing you to communicate even if you don’t have cell service or wi-fi.
Use of the device is free of subscription charges and is completely private. It enables you to message friends as well as others within range (usually 1-3 miles, but can be up to 32 miles). goTenna is ideal for anytime you may be off-grid – traveling abroad, crowded events, remote outdoor areas – or simply when you'd rather be your own network.
