I used to have an S3 and now have the S5. At work in my office, I got zero reception on my S3 and had to plug it in or it would be dead by the end of the day because it was constantly searching for a signal. When I left for the day I would suddenly get voicemails and notifications because I finally got a signal again. With the S5, I actually get a weak signal in my office, so I receive notifications, texts, and can actually receive phone calls every once in a while. So I'd say from my experience the signal on the S5 is much improved over the S3.
Shouldn't we treat this world like the garden of Eden and avoid the apple at all costs?
Sometimes you go to the circus.......sometimes the circus comes to you