Apple doesn't list the specs during their events because this is one area where they consistently underperform. As a huge Apple fan and someone who defends most decisions they make as they are a smart company, I must say that it's sad that pundits on this site often defend their decision to use very low amounts of RAM. Is iOS more efficient than Android? Yeah. Is 1GB of RAM going to outperform 3GB of RAM on Android for common multitasking? No. Those with an iPhone 6 Plus know the struggle. My device can't even rotate to watch a video without crashing about 25-33% of the time. I'm lucky if I can hold two tabs open in Safari. Sometimes simply activating the task switcher and going immediately back to Safari without launching any other app is enough to force a tab reload. Sometimes if I just look at a site the wrong way it will reload. Sometimes just reloading a site causes it to crash and reload again. These are problems that I never encounter on my iPad Air 2 with 2GB of RAM, which is by far my favorite iOS device of all time. Sometimes days later I'll multitask over to an app and it instantly resumes as if I had never left it. Or I'll switch over to a Safari tab I had last opened a week ago and all of the contents are immediately there—including form data I may have filled out.
You guys are going to love the 2GB of RAM benefit on the new 6S. 1GB was my number one problem with my iPhone. Number two is that iOS needs to work out the bugs and iOS 9 seems to be working to address that. Number three is services which are finally getting better. There is still much improvement left for Apple to do but I'm pleased with the progress this year. Hopefully going forward the massive improvements in efficiency with the smaller manufacturing processes will allow Apple to add RAM at more frequent intervals. And efficiently improvements in the software of iOS will continue to allow older devices to perform well with updates. Every two years we should see an increase in RAM. This is the way that it used to be until the iPhone 6 and it showed.
iPhone 128MB
3G 128MB
3GS 256MB
4 512MB
4S 512MB
5 1GB
5S 1GB
6 1GB <— too many years!
6S 2GB
Why brag about a desktop-class 64-bit chip of you can't even take advantage of a primary benefit of 64-bit and use more addressable RAM? Not to mention, as Anandtech pointed out (before he was hired by Apple, mind you) that 64-bit chips typically use 20-30% more addressable memory than 32-but chips for the same processing. So in effect those iPhones had less usable RAM. I've had every iPhone except the 5S so I can't vouch for it, but this might explain why I never had issues with my iPhone 5. Well—that and iOS 6, lol, but even iOS 7 on the 5 wasn't nearly as bad as iOS 8 on my newer 6 Plus.
You guys are going to love the 2GB of RAM benefit on the new 6S. 1GB was my number one problem with my iPhone. Number two is that iOS needs to work out the bugs and iOS 9 seems to be working to address that. Number three is services which are finally getting better. There is still much improvement left for Apple to do but I'm pleased with the progress this year. Hopefully going forward the massive improvements in efficiency with the smaller manufacturing processes will allow Apple to add RAM at more frequent intervals. And efficiently improvements in the software of iOS will continue to allow older devices to perform well with updates. Every two years we should see an increase in RAM. This is the way that it used to be until the iPhone 6 and it showed.
iPhone 128MB
3G 128MB
3GS 256MB
4 512MB
4S 512MB
5 1GB
5S 1GB
6 1GB <— too many years!
6S 2GB
Why brag about a desktop-class 64-bit chip of you can't even take advantage of a primary benefit of 64-bit and use more addressable RAM? Not to mention, as Anandtech pointed out (before he was hired by Apple, mind you) that 64-bit chips typically use 20-30% more addressable memory than 32-but chips for the same processing. So in effect those iPhones had less usable RAM. I've had every iPhone except the 5S so I can't vouch for it, but this might explain why I never had issues with my iPhone 5. Well—that and iOS 6, lol, but even iOS 7 on the 5 wasn't nearly as bad as iOS 8 on my newer 6 Plus.