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Hi @Mehmeh, I'm sorry for the late reply to your question!
Android 8.0 included included the feature Wi-Fi Protected Setup (WPS Push Button) that could be used to connect WPS-supported client devices, such as wireless printers, to your router wirelessly. This feature has been removed by Google in Android 9.0.
I hope that answers your question! 
Hi @Mehmeh, I'm sorry for the late reply to your question!
Android 8.0 included included the feature Wi-Fi Protected Setup (WPS Push Button) that could be used to connect WPS-supported client devices, such as wireless printers, to your router wirelessly. This feature has been removed by Google in Android 9.0.
I hope that answers your question! 