User Agent

Mozilla/5.0 (iPhone; CPU iPhone OS 81 like Mac OS X) AppleWebKit/600.1.4 (KHTML like Gecko) Version/8.0 Mobile/12B411 Safari/600.1.4 (compatible; YandexMobileBot/3.0; +http://yandex.com/bots)

This user agent belongs to Yandex Mobile Bot. Yandex LLC developed this Bot/Crawler. This Bot/Crawler run on iOS and it renders web contents with WebKit on iPhone.

Bot/Crawler-Yandex Mobile Bot

Yandex Mobile Bot

Version 3.0 @ 32 bit
Developer Yandex LLC
Parent YandexMobileBot 3.0
Platform apple (32 bit) by Apple Inc
Device Type Mobile Phone
More info http://yandex.com/bots

Act as 

Mobile Yes
Tablet No
Crawler Yes
Fake No
Anonymized No

Capabilities

 

Rendering Engine WebKit by Apple Inc (For Google Chrome, iOS (including both mobile Safari, WebViews within third-party apps, and web clips), Safari, Arora, Midori, OmniWeb, Shiira, iCab since version 4, Web, SRWare Iron, Rekonq, and in Maxthon 3.)
Pointing touchscreen
Javascript Yes
CSS Yes Version: 3
Cookies Yes
Tables Yes

 

Frames Yes
IFrames Yes
Background Sounds No
Java Applets Yes
VB Script No
Activex No