Does Iphone 5 and Iphone 5s both have Retina Display?

I own iphone 5 and when i went to apple store to check around i noticed that iphone 5s has different display, the picture is more bright, colourful, vivid or something. Is this just a feeling, do they have the same display

I'm not sure if there are any small differences between the screens, but yes, they both have a retina display (every iPhone starting with iPhone 4 has one). I think the most likely scenario is that you were looking at a phone with the brightness set differently.

Well, The resolution of two devices are the same, 1136×640 so both of it are retina, but coz 5S is the flagship, the technology is better.

The iPhone 4, 4s, 5, 5c & 5s all have Retina Displays.