IPhone 4 on iOS 6 speed problems?

Is anyone facing some performance issues after updating to new iOS. Specially slowing down of native apps like message, photos, calendar and so on

Added (1). When I updated my iPhone 3G to iOS 4.2.1 it became so slow, that it was irritating to use, that is why I'm little cautious of upgrading this time.

I'm a user of an iPod touch 4th generation. I've recently updated it to iOS 6. I never experienced any lagging in the photos or calendar app. But the message app was loading up slow for me.

  • In terms of general speed, how good is the Iphone 5? Does it freeze alot? Or is there a better smart phone because my contract runs out soon and I can get an upgrade Please TRY NOT TO GIVE ME BIASED ANSWERS, FOR IPHONE OR ANY OTHER PHONE. BE FACTUAL. NOT BIASED.
  • How to speed up my iphone 3GS? My iphone is so slow now i've filled it up nearly with all my music… I googled it and the only thing i found that had nothing to do with jailbreak was doing a hard reset which had made a different but its still slow… Oh and turning off spotlight… So yes any suggestions please? I don't want to do a factory reset and i don't want to loose all my saved app data and icloud won't work on my account for some reason.
  • How to speed up AND connect songs on iPhone? I'm a fitness instructor and want to use my own songs from my iTunes library for a fitness mix. I need to have the songs connect AND I need to speed them up to at least 133 bpm. Is there an app for this?
  • How to Keep new IPhone Internet speed fast? - 1 Everytime I get a new iPhone the internet is super fast and after 3 weeks it's starts to get slower and slower. How to keep this new iPhone speed fast?