A, B, C = 2
D, E, F = 3
G, H, I = 4
J, K, L = 5
M, N, O = 6
P, Q, R, S = 7
T, U, V = 8
W, X, Y, Z = 9
For example, if you see a phone number displayed in advertising like this;
800-123-MIKE
This phone number translates to;
800-123-6453
Since M in the MIKE belongs to dialing phone number 6.
I belongs to dialer number 4.
K means dialing phone number 5.
And E is denoted as number 3 on the phone dialer.
Notes 