Question

describe how communication has changed in last 20 years​

Answer 1

Answer:

in past we use landline to call someone and we write letters and post them but today we use phone to call someone and we use e-mail inspite of letters

Answer 2

The great science had changed poor communication of india to good ones.Earlier we used landline telephones which cant be carried here and there but now androids have launched which are easy with work and with carry too.
Earlier only samsung back camera were avaible but now mobiles with front camera have been launched which help us to do conference and video calls