I used 36 for the channel on a 5 GHz router and not channel 11 for the 2.4 GHz side and the S4 (plus the other devices) I had worked fine. No one else was using a 5 GHz router in my area and using a wifi analyzer application I located the least used channel for the 2.4 GHz side. Channel 11 was already quite crowded.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.