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by bendyorke 4392 days ago
The MacBook Pro Retinas and MacBook airs take advantage of newer battery cells, and have greatly improved battery life in my experience. The 13" MBP battery never impressed me.

Also, not sure when you bought your particular iPhone, but the iPhone 4 is coming up on being 4 years old (announced round about the same time as the Galaxy S for comparisons sake) and it's still able to last a full day with the latest software, and all on single core processor. I find that really impressive, to say the least :)