What iPhone do you have?
If you have an iPhone 4, you cannot upgrade past 7.1.2.
If you have an iPhone 4S, you CAN upgrade to iOS 9.
The iPhone 5 and 5C can be upgraded to iOS 10, and the iPhone 5S can be upgraded to iOS 11.
Apple Event: May 7th at 7 am PT
What iPhone do you have?
If you have an iPhone 4, you cannot upgrade past 7.1.2.
If you have an iPhone 4S, you CAN upgrade to iOS 9.
The iPhone 5 and 5C can be upgraded to iOS 10, and the iPhone 5S can be upgraded to iOS 11.
What iPhone do you have?
If you have an iPhone 4, you cannot upgrade past 7.1.2.
If you have an iPhone 4S, you CAN upgrade to iOS 9.
The iPhone 5 and 5C can be upgraded to iOS 10, and the iPhone 5S can be upgraded to iOS 11.
Recycle your obsolete one and buy a new one that supports the newer software.
iOS 9.