My prior iPhone model was a 3G I think, so the iPhone 5 is quite an improvement. The digital quality of photos and video is enhanced. The response time intuitively is better during use. This iPhone recharges itself quite a bit faster than my previous iPhone ever did. Also, I sense the download times for new apps are faster. Even if you never had an iPhone before, I would highly recommend taking a look at the iPhone 5 when ready for your next mobile phone purchase!