User Agent

Mozilla/5.0 (iPhone; CPU iPhone OS 12_3_1 like Mac OS X) AppleWebKit/606.2.35 (KHTML, like Gecko) Mobile/15E148 QQ/8.0.8.458 V1_IPH_SQ_8.0.8_1_APP_A Pixel/1242 Core/WKWebView Device/Apple(iPhone XS) NetType/WIFI QBWebViewType/1 WKType/1

This user agent belongs to QQ-App. Tencent Ltd. developed this Browser. This Browser run on iOS and it renders web contents with WebKit on iPhone.

Browser-QQ-App

QQ-App

Version 8.0 @ 32 bit
Developer Tencent Ltd.
Parent QQ-App 8.0 for iOS
Device Type Mobile Phone

Act as 

Crawler No
Fake No
Anonymized No

Device - Apple

Brand Apple
Model iPhone
Platform apple (32 bit) by Apple Inc
Mobile Yes
Tablet 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