Control servo through celluar modem

Hello everyone,

A project I will be working on in the future will consist of the following:

  1. 4g Modem;
  2. HS-55 Feather Servo motor; and
  3. Arduino

I have yet to purchase my arduino board and this is really my first question. I do not know which board to purchase. I am trying to make the project as small as possible. I want to be able to connect to my cellular modem and control the servo motor no matter where I am. Is this possible?