Apple is obviously one of the richest phone manufacturer for capital, human resource, and equipment. So it can't be simply applied for other competitors. (But I

Apple is obviously one of the richest phone manufacturer for capital, human resource, and equipment. So it can't be simply applied for other competitors. (But I believe Samsung/Huawei can do) For battery, Apple makes iPhone, not Android phone. It means they need less batteries because its OS is efficient and they make great SoC with the best fab (be sure that efficiency of Samsung 5nm is similar to TSMC 7nm). iPhone 13 mini only have 2,406mAh.