How to fix "the feature has been turned off because it slows down your phone"?

[Mohammedsafi]

How to fix "feature not available "?

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Doesn't samsung A03 support sharing screen in

[donovangregg]

Samsung has the control of your phone features and new features that they would like to add can only be done from their side

[DatGuy]

For the former question, use a VPN (relocate your virtual address to the US or a supported country) and remove the SIM card. Then reset the Galaxy store (Wipe data + cache)

For the latter, what are you trying to screen share and where?

I'm not sure what's with the title of this post unless you are asking 3 separate questions?