Please don’t think of a screen as a solution particularly for young children. That’s really a cop out and very lazy for adults to think this is a good idea. Poor child, nobody wants to spend time with him, here have a tablet then adults don’t have to talk to you !
There are many reasons this is not a good idea, hampering general development, language development, interacting with other people and surroundings and possible damage to an immature developing brain.
Young children are generally x as delight and so rewarding most of the time and eager to learn. We adults should feel privileged to be the people to help them to learn so many things that tablets just can’t.