Question

write a short letter to the principal to allow the students to bring and use mobile phone at school

Answer 1

Just a pattern of Formal letter I hope it will help you :-
House no . xyz
Area / Locality
City's name with pic code
(Space)
Date
(space)
The principal
Institution name
Area / Locality
Citys name with pin code
(space)
Body oF The Formal Letter
(space)
Thanking you ,
Yours faithfully ,
full name
Class / Section