We all make typos. That's what I did. I missed the "m" after the "dB" and that is what caused all the hoopla.
The -110dBm was referenced for a 4 and 4s. I also seen that referenced for the 5. Top of my head, I don't remember where I read that. I'll see if I can find it.
Sorry for all the confusion. -- "You can observe a lot by watching". Yogi Berra
