Is a smartphone really necessary to use in english subject

not really

if you finished your igcse/a or As levels and you're bored in class then maybe use it otherwise if the teacher is explaining smth important then don't :)

yes necessary but not too much

a main idea dna proper infromation

the sun warms our planet, and with the moon, creates the tides. the moon orbits the earth and in turn, the earth orbits the sun. because they appear to be the same size in the sky, the sun, earth and moon work together to create eclipses. when the moon is directly in between the earth and sun