Mr
Advantages: I am very impressed with this phone. It feels very solid in the hand, amazing build quality, the screen is gorgeous, and the phone is very responsive. It came in an actual nice box, suitable for a gift. Also, unlike with most vendors, there are actual OS updates! The day I unboxed it (May 2017) it booted into Android 6.0 but after I got it online it rapidly offered to update to Android 7.0. The fingerprint scanner sounded like fluff, but I really love it: my sneaky little kids constantly steal my phone to play games, and didn't set my old phone to autolock because of the hassle of unlocking it all the time. The fingerprint scanner works very reliably and quickly, and has totally solved this problem. Wifi connections are fast and stable, and I'm getting good 4G speeds in Ireland. Bluetooth works well.
Limitations: The camera is only okay, and the speakers are limited by their size, but you can only push physics so far, especially at a price like this. To date, I really have no complaints about the device itself. Customs charged me nearly EUR50 on a EUR158 order, and delayed it for a few days, but that's not really Gearbest's fault.