Forum:Can't access "Nervous Ron" or "Trevor Philips Industries," need some help

I've just started playing GTA 5 on the PS3, and a few days ago I was able to finish the mission "Mr. Philips." I can't exactly recall if Ron ever did call Trevor about the Chinese contact, but did get mentioned before the Ortega cutscene. After the mission was complete, the only missions that were available were Strangers and Freaks, and I can't switch to Michael and Franklin until I finish "Friends Reunited." There's no icon telling me where to find the next main mission, and I've gone as far as finish the first Strangers and Freaks to see any effect, but nothing. I've checked the Pause Menu and it says that I'm currently not in any mission right now, and the Mr. Philips mission can be replayed, so it means it's complete. I've also just started GTA Online.

What do I do? I want to keep advancing in the story, and this is not letting me do that.