The s10 is a good phone @HAIGHY70
When you pull down the notification shade from the top to also see the various toggles you should see one saying SmartView which allows a person to cast from 0thekr phone to a compatible TV.
Current Phone ~
Samsung Note 20 Ultra 5G SM-N9860_256Gb SnapDragon 865+
Samsung One Ui 3.1/ Android 11.
@HAIGHY70 Yes you should notice the difference with the S10 in terms of power/speed and the quality of the sound/graphics. It is also a superior display, though appreciate that it was not within your Budget at the original price. Some of the comparisons on this site . https://phonesdata.com/en/compare/5734/5673/
@HAIGHY70 oh that's good. Appreciate not everyone necessarily needs the more premium devices but you should still find it a great experience. As they say don't look a gift horse in the mouth (though costing you a little money).