These are not the Homies you can pick up off the streets. These are 7 specific characters you can call from going to the Pause Menu and selecting “Cell Phone”>”Homies” Once you have all 7 names in your cell phone, you will unlock this achievement.
Here's how to get them:
**WARNING, MAJOR SPOILERS**
1. Wheel Woman - Unlocked after you are Canonized.
2. Will - Unlocked after completing the 2 levels of the first Snatch Mission in Saints Row.
3. Chicken Ned - Unlocked by calling 555-2445 at any point of the game.
4. Samantha - Unlocked by completing all 8 levels of the Vice Kings Escort activity.
5. Laura - Unlocked by completing all 8 levels of the Westside Rollerz Drug Trafficking activity.
6. Mr. Wong – Unlocked by completing the Westside Rollerz Hitman Activity.
7. Zombie Lin - After Lin gets wasted in Westside Rollerz mission 7, you can bring her back to life by calling Eye for an Eye at 555-5966