Weird whitespace on the bottom of page (mobile)

Question

My client has reported a stange issue with his website. URL of the web-site is your-montenegro.me

A stange white space appears at the bottom of the page when it's loaded on Android-based browser. Here are the screenshots:

• Huawei Ascend, Android 4.3: http://i60.tinypic.com/90vuyw.png
• HTC Desire S: http://i61.tinypic.com/2pyayk1.jpg

When I try to open this web-site:

• Windows Phone 8.1 IE10: No white-space
• Any Windows/Linux-based browser: No white-space

Do you have any idea what to try?

I have tried playing view browser viewports but wasn't able to come with a solution.

Edit:

Also, when I load this page on Huawei Ascend first time, site appears a bit zoomed in (which is totally fine/expected), but scrolling down still reveals the white-space.

Edit2 (screenshots):

Huawei Ascend:

HTC Desire S