Which is a good thing for those customers who bought an iPhone 3GS back in 2009, they're pretty much guaranteed to receive software updates for their phone for

Which is a good thing for those customers who bought an iPhone 3GS back in 2009, they're pretty much guaranteed to receive software updates for their phone for many months to come. That's in stark contrast with buying an Android phone, where models go out of style in a matter of weeks, not years.