A case for this. A dongle for that. Stop carrying around an arsenal of attachments and grab a Nexpaq Modular Smartphone Case. This unique protective cover lets you mix-and-match from a variety of modules that add functionality to your phone, like additional batteries, an amplified speaker, a temperature and humidity sensor, flash storage, and even a breathalyzer. Available in black or white for the iPhone 6, 6 Plus, Samsung Galaxy S6 Edge, and Samsung Galaxy S5.
The iPhone is the most popular camera in the world. Manfrotto makes some of the most popular camera accessories in the world. So the Manfrotto Klyp iPhone Photo Case is a natural pairing. Like most cases, it can help protect your iPhone from scratches and drops, but it also helps you take better photos by working with a series of Klyp-specific accessories like a tripod adapter, a powerful LED light, and a series of add-on lenses that includes everything from 3x telephoto to fisheye options. Available for the iPhone 5, 5S, 6, and 6 Plus.
Power and protection. Two of your main concerns when dragging an iPhone into the wilderness. The Mophie Juice Pack H2PRO Case covers both. It gives you a 2,750mAh battery — enough for a complete recharge of an iPhone 6 — integrated into a case that offers IP68 waterproof protection and exceeds military standards for vibrations, shocks, and drops. It won't make LTE magically appear in the woods, and it won't help save you from a bear attack or start a fire, but as rugged multi-function cases go, it's as good as you're going to get.
It's by no means the first passive phone amplifier we've seen. But it is the best looking. The Trobla Wooden Smartphone Amplifier works with a wide variety of devices, using a carefully-crafted series of canals and a horn-shaped opening in the wooden enclosure to both amplify the sound emerging from your phone and make it sound far better than it would if you're just ghetto blasting off a table or shelf. Available in maple or walnut.