Walmart tests drones for handling inventory; Wi-Fi Alliance on track to deliver LTE-U testing standard in August

More wireless tech news from across the web:

> Walmart, the country's largest retailer, is testing the use of flying drones to handle inventory at its large warehouses. New York Times article

> The Wi-Fi Alliance is on track to deliver a co-existence testing standard for LTE-U products in August. Wireless Week article

> Tony Fadell, the CEO and co-founder of Nest, is leaving the company two years after his connected device firm was acquired by Google. Re/code article

> Airports are looking to transition to LTE. Nokia blog

> Google is testing a feature that tells users which Android apps to uninstall when running low on phone or tablet storage space. Wall Street Journal article

> Samsung announced an upgrade to its fitness tracker offerings with a new model, the Gear Fit 2. Ars Technica article

> Microsoft Band 2 gets Cortana support for Android users. Engadget article

And finally… What if someone took away your smartphone for 24 hours? Re/code article