Most tech devices these days are Bluetooth-enabled, but what many may not know is that feature can be used to send free texts, photos, and videos – without the need for a data plan or even available WiFi network. Jott is one of the hottest and most popular Bluetooth-based messaging apps, especially with students because of its feature that allows users to find other Jott users in school networks. It has the ability to automatically delete messages after a set time and to be alerted if someone has taken a screenshot of a message you sent. The app is free for Android and iOS and can be used with iPods, too.…