I had one big problem: the built-in browser (WebView), what we use for authentication, supports TLS 1.1+ with only 4.4 KitKat. Android OS supports TLS 1.1+ from 16 API versions, but WebView supports TLS 1.1+ from only 19 API versions. I did not find the ability to manually install the TLS protocol for WebView. Therefore, we cannot log in through the network on devices below KItKat. I checked it on real devices Samsung 4.1.2 and Asus 4.2.2, and emulator 4.3.1
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