If you own a Xiaomi device, and you probably don't if you live outside of Asia, then you're familiar with MIUI. This build of Android ships on all of the company's devices. 7.0 arrived a couple months ago, and now folks are receiving the first update of 2016, version 7.1.
The update is small, and so are many of the tweaks. The file manager has changed private folders to "Hidden Folders," which let you hide files from view and protect them with a password. The code will be the same one guarding your lockscreen unless you leave your phone unlocked.
Mi Drop has gained the ability to share files via Wi-Fi Direct peer-to-peer sharing between two devices with the app installed. The gallery app lets you doodle. With colors. And people in India can reduce their data usage using Data Saver.
The update is rolling out over-the-air, but ROM packages are also available for download manually. Either way, the software is only intended for the Mi 2/2S, Mi 3, Mi 4, Mi Note, Mi 4i, Redmi Note 4G, Redmi 2 / Prime, Redmi 1S, Redmi Note Prime, Redmi Note 2, Redmi Note 3G, and Mi Pad.