College days Part-3: Laughter drama of college days

In this drama book, the friendship of four friends Changu, Mangu, Billu and Ladha is truly commendable. Those who stayed together from school to college and will be together even further.
The fun and frolic of college days are different.
In the second part, he got admission in the college with great difficulty because due to the merit of Changu, he was not getting admission in any college and these four friends had to take admission in the same college.
Finally, one gets admission to a college.
These four friends entered college for the first time. He had not even seen college, and today he had come to college.
In the second part of this drama, tremendous fun is shown during the college days. Now college is too old for them.
But Billu is the quietest and smartest of the four as well as intelligent. He always keeps on explaining to the three friends. When the result declares, the four friends pass. Mangu, who was sitting next to Changu, tops the exam. He would top in the exam, no one even believed because he was sitting next to Changu. Changu was more interested in talking nonsense than in studies. He never did well in college. Yet Mangu proved that whoever is sitting next to him has no effect on studies.
Although these friends had come to college, but in this technological age, they did not have a mobile, but in this third part they have a mobile. Now it has to be seen how mobile affects his friendship and studies.