There are Androids with 10000mAh but you'll be sewing your pockets back every week, that stuff is heavy. 6000 with current tech is also as big as a fat phone right now..
On the other hand I can get 3 days easy with my OPO 5, it's thinner than iPhones and also aluminium body. (H/P jack at the bottom too, finally, as it's a lot more natural imo having your phone downwards in your pocket as the direction of your your palm is..). If I don't bother charging it 10 100% I can charge her to 75% in about 15-20 min and last nearly 2 days.