Remove grey space on upper keyboard (React Native - iOS) - react-native

There is grey space on my react native application for iOS platform, like the image below :
How to remove grey space on upper keyboard (React Native - iOS) ? Is it possible ?


I have solved the problem by using this :
[[IQKeyboardManager sharedManager] setEnableAutoToolbar:NO];

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https://facebook.github.io/react-native/docs/text.html#style
As it s written here, justify for android is not available... Most of the tricks suggest to use left or then a webview as you said...

Using webView resolved the issue. To show webView inside the ScrollView I just had to add height to webView.
https://github.com/jsdf/react-native-htmlview/issues/7