I want to postpone my class until 8th Febrarury because of my business trip.

-> I want to postpone my class until 8th of February because of my business trip.

It will be possible that I join my class from 9th Febrarury.

-> Is it possible that I can attend my class on the 9th of February.

If you have any confirmation to me, please contact my celluar phone.

->  If you have any confirmation for me, please contact my cellular phone.