No changes here - the Maps app launches and is ready for input in the same amount of time as in iOS 4.1. From the Home screen, iOS 5 edges out iOS 4.1, and the time is consistently reduced by almost half when launched from the Lock screen - in order to reduce launch times, iOS 5 apparently does some preloading when the Home button is tapped twice (I also found this to be true on a fourth gen iPod Touch, though the difference was less pronounced). This is the time between when the Camera app was launched and when you could actually take pictures with it. iOS 5 just edges out iOS 4.1 in this case. This is the time between when the Messages app was launched and when the app was ready for text entry. Our tests found that, most of the time, app launch speed was as fast or a bit faster than under iOS 4.1. The phone was loaded with a fresh iOS 5 install, and all apps had been cleared from the multitasking tray. To get these numbers, we went back to our iOS 4.1 performance evaluation and repeated the same tests under the newer version. We've already seen that JavaScript performance in Safari is better in iOS 5, but app launch times are another important metric.
You get the picture - the 3GS’s upgrades relative to the 3G (which impressed us when the phone was originally released) has given it longer legs than its predecessor (and we’ll probably be saying similar things about the 4S in a couple of years). The 3GS has 256MB of RAM, the same as the original iPad and the currently-shipping fourth-gen iPod Touch, while the 3G had only 128MB. The 3GS’s Cortex A8 uses the same ARMv7 instruction set as the later A4 and A5 chips, while the 3G used the same ARMv6-capable Samsung S5L8900 SoC as the original iPhone. The big stuff is there, though, and it’s because the performance and feature gap between the 3GS and the rest of Apple’s lineup isn’t nearly as wide as the gap between the 3G and the then-current lineup at the time of iOS 4’s release. Generally speaking the 3GS seems to be running just as quickly as it did with iOS 4.3, and it’s missing just a handful of features included on higher-end devices: Location-based Reminders (on the 4 and 4S), WiFi Personal Hotspot (introduced for the Verizon iPhone 4 and extended to the GSM iPhone 4 in iOS 4.3, no doubt because the 3GS uses a BCM4325 for WiFi and the iPhone 4 uses a BCM4329), and Siri (an iPhone 4S exclusive) are among the most notable. The iPhone 3GS came out just over two years ago, and while it's getting a little long in the tooth its performance under iOS 5 is pleasantly surprising. IPhone 3GS and Third Generation iPod Touch
#SKYPE FOR IPHONE 3G 4.1 UPGRADE#
Will iOS 5 make the older devices on the support list similarly slow, or can we upgrade without worrying? IPhone 3G users may remember what using iOS 4.0 was like on those phones when it was first released - it reduced performance to the extent that fixing this slowness merited a bullet point during Apple's iOS 4.1 reveal, and we found that even that didn't fix all of the problems.
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