It's not just you. I have an S4. I bought it when it was a top device to replace an unfortunately broken after 2 weeks Lenovo K900 I had (on an Intel Atom cpu - that thing was snappy af). Because I used a really fast phone just before that samsung piece of **** I was noticing and completely aware how laggy and slow it was. Btw, the S4 I have is on the Exynos chipset. They used to say the snapdragon version was great. I really don't believe that. They're just reinforcing their beliefs/making excuses for their poor choices, imo. I believe that, because until recently I thought it's just because S4 is old. A week or so ago I used an S8 and it's almost exactly as slow and laggy as the S4 I have, only it costs like ten times the price of S4, lol. The owner said it's slow because they need to clean it etc. (lol, of course). Further, my bff, a fan of Sony, just about a month ago bought a new Xperia to replace his old one. His older one was the direct competitor to the S4 - and it was blazingly fast (like, you wouldn't believe, it's just the Grand Canyon wide performance gap between the two) until its very end. He only replaced it because of mechanical damages (his arms grow out of his ass lol). Curiously though, their tablets are fine. My brother has a 4 series tablet that has lower specs than the S4 but it's so much faster than the latter.