I apologize [in advance] for any typos, my friend Mr. James Beam is working against me. That jerk. Anyway, I have posted several threads in the past regarding the screen temperature of my new 5s. Many responders had also shared my concern, regarding the "warmness" of the 5s (when going from the 4s or earlier. iPhone 4 for me). This post is to simply entice you to: a) give it time, because b) it gets better with time, as [in my humble opinion] the warmness adds to the correctness of the balance of photos your 5s take (which are phenomenally gorgeous).
I hope all of you are enjoying your new device, given it has not hindered your overall experience.
Also, Mr. Beam says "Hi".

I hope all of you are enjoying your new device, given it has not hindered your overall experience.
Also, Mr. Beam says "Hi".
