Nopes... It is just some politicians who are creating divide and doing divide and rule. Normal people don't have any time for this thing. They not even bothered for such issues.
.
In my personal experience I visited Chennai Bangalore many times and I found people very nice and friendly and they had no issues with North people. I had no language problem as everybody understood English.
Similarly...
more... people from south work in North and they have no problem. I have many friends in those places and they work in Delhi and are living happily. I met them many times and we enjoy north and south cuisines together and have great time. My friend gifted me Mysore sweet dish when I was leaving and later when I went there I gifted him Gulab Jamun which he liked very much.
.
Not only south, people from far East are also friends and they also are very friendly. And we enjoy each other company when we meet.
There is nothing as North South East West , it is just India and India must come first for everyone.
Whole India is an example of unity in diversity and should remain as such.