When Apple announces a phone, it talks more user experience and less numbers. That doesn't work for TENAA, however, the wireless authority that certifies gadgets for use in China. So, here are the battery capacities of the iPhone 8 and iPhone 8 Plus. The milliamp hour numbers have gone down 8% for both sizes of iPhone. And the phones themselves have not gotten thinner or lighter, quite the opposite in fact - they are 0.2mm thicker and weigh 10g and 20g more for the big and small ones, respectively. Battery RAM iPhone 7 1,960 mAh 2 GB ...
Source: http://www.gsmarena.com/iphone_8_and_8_plus_have_smaller_batteries-news-27268.php
