User Agent

Mozilla/5.0 (Linux; U; Android 4.2.1; ru-ru; Lenovo P780 Build/JOP40D) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 \xD0\x9C\xD0\xBE\xD0\xB1\xD0\xB8\xD0\xBB\xD1\x8C\xD0\xBD\xD1\x8B\xD0\xB9 Safari/534.30 MxBrowser/4.5.7.1000

This user agent belongs to Maxthon. Maxthon International Limited developed this Browser. This Browser run on Android and it renders web contents with WebKit on general Mobile Phone.

Browser - Maxthon

Maxthon

Version4.5 @ 32 bit
DeveloperMaxthon International Limited
ParentMaxthon 4.5 for Android
Device TypeMobile Phone

Act as 

Crawler No
Fake No
Anonymized No

Device - Lenovo

BrandLenovo
ModelP780
Platform android 4.2 (32 bit) by Google Inc
Mobile Yes
Tablet No

Capabilities

Rendering EngineWebKit 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.)
Pointingtouchscreen
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