GTA 5 Mission Walkthrough: Friend Request
It's time to finally meet Lester, the mastermind behind many of Michael's previous heists back in the day. However, before he decides to help you with your latest scheme, he'll need a favor from you.
First you'll need to go to a Suburban store and get some "younger" and "hip" clothes. After that, you'll go straight into the Life Invader building, where you'll have to pretend to be an intern, in order to mess with the Life Invader prototype phone.
Once done, you can go home, turn on your TV, watch the Live Invader press conference, and give that phone a call for a special surprise.