Ask HN: Battery capacity of Asus Zenfone 3 Zoom vs. top tier smarthpones
Asus Zenfone 3 Zoom [0]
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Battery: 5000mAh
Dimensions: 6.07 x 3.03 x 0.31 in
Weight: 170 grams
Screen: 5.5"
Price: $329.99 [3]
Apple iPhone 7 Plus [1]
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Battery: 2900 mAh
Dimensions: 6.23 x 3.07 x 0.29 in
Weight: 188 grams
Screen: 5.5"
Price: $969.99 [5]
Google Pixel XL [2]
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Battery: 3450 mAh
Dimensions: 6.0 x 2.9 x 0.2 ~ 0.3 in
Weight: 168 grams
Screen: 5.5"
Price: $849 [4]
So through this overview, the phones are relatively the same size, weight, screen size, and yet the top tier smartphones' battery capacity is greatly behind that of the Zenfone. Why is this the case? I understand that the three phones may vary in camera, processor, build quality etc hence justifying the price difference a bit. But I have trouble understanding as to why do the top tier phones not focus on increasing the battery capacity, which clearly can be done as demonstrated by Asus. I would gladly be willing to compromise on some of the Pixel/iPhone parts/features for a greater battery capacity.
[0] https://www.asus.com/us/Phone/ZenFone-3-Zoom-ZE553KL/Tech-Specs/
[1] http://www.gsmarena.com/compare.php3?idPhone1=8064&idPhone2=8065
[2] https://madeby.google.com/phone/specs/
[3] http://www.bestbuy.com/site/asus-zenfone-3-zoom-4g-lte-with-32gb-memory-cell-phone-unlocked-navy-black/5833504.p?skuId=5833504
[4] http://www.bestbuy.com/site/google-pixel-xl-4g-lte-with-32gb-memory-cell-phone-very-silver-verizon/5656048.p?skuId=5656048
[5] http://www.bestbuy.com/site/apple-iphone-7-plus-128gb-black-verizon/5581629.p?skuId=5581629
EDIT: Fixed spacing