Hi, ItalianHunk! First, let me discuss about GO SMS so that others would know about this app. GO SMS PRO brings you cool UI, fast and convenient SMS/MMS experience.
GO SMS is the most popular messaging app; Very powerful, Cool, Funny, Safe, Fully customizable; Well support SMS/MMS + GO Chat(free message) + Walkie Talkie(free voice).
★ Features
-- Full SMS/MMS support
-- GO Share service, send file through 2G/3G/4G or WIFI or by one SMS
-- GO Chat/Facebook Chat support
-- Doodle, Handwriting
-- Private box
-- Schedule SMS
-- Batch modes
-- Popup with quick reply, privacy mode
-- SMS backup and restore by all or by conversations, can be sent to email
-- Many cool themes; also DIY theme, Theme Maker plug-in;
-- Fully customizable look; Supports chat or list style; Font changeable
-- Security lock, support lock by thread; Blacklist
-- Support GESTURE, left/right slip, many transition effect
-- Support Emoji with Emoji pulg-in
-- Settings backup and restore
-- Facebook contact photo support
-- Group texting
-- Notification with privacy mode and reminder notification
-- Support folders view: Inbox, Outbox, MMS, created folders, encrypt folders
-- Individual customization for Notification , Signature and Conversation
-- 1x1 icon widget with message count and 4x2 medium widget
-- Support many languages
-- Online SMS lib
-- Handy, build-in Contacts
-- Night mode
-- Stock SMS can be removed (but please be care)
-- Split large messages for CDMA
-- Time offset adjustment
-- Avoid disordered messages: sort by time or by order of msg sent/received
-- Localization support for accented chars: by enabling Czech, Polish and French SMS mode
-- Quick text management
-- Messages grouping (Group mode or Separate mode)
For your question, It might not be working because you are not using Gingerbread and is not rooted!
