[quote=poorgradstudent]2. The trend is definitely towards people keeping their phones longer. I remember five years ago when a one year old phone felt “old”, these days a 2 year old iphone still seems pretty current[/quote]
It really depends on the OS and OEM in term of updates. If you have iPhone 4, you can’t install iOS7, which means a bunch of apps are off limits to you. If your android OEM doesn’t give you an updated OS, you’re SOL when it comes to newer features. Even Google neglect their Nexus line after less than 2 years.