In the past, smartphone companies used "optimization" as an excuse to reduce the battery size or to not increase the battery size. Examples include the Galaxy S6 (source) and the iPhone 6s (source). But eventually, they realized that optimization can only go so far until you have to increase the physical battery size if you want to get longer-lasting batteries.
Not only do larger batteries need to be recharged less often, but they can also charge faster! And they also have longer lifespans! And they are less affected by low-temperature power cutouts that have plagued early-2010s iPhones with their tiny batteries. Larger batteries are superior in all these regards.
Thankfully, smartphone companies finally realized this obvious thing. Now, even entry-level phones such as the A series have flagship-sized batteries (5000 mAh). The companies finally realized buyers would more than happily accept few millimetres of added thickness for more battery endurance and faster charging speeds.
[I release this post into the public domain, CC0 1.0.]
Not only do larger batteries need to be recharged less often, but they can also charge faster! And they also have longer lifespans! And they are less affected by low-temperature power cutouts that have plagued early-2010s iPhones with their tiny batteries. Larger batteries are superior in all these regards.
Thankfully, smartphone companies finally realized this obvious thing. Now, even entry-level phones such as the A series have flagship-sized batteries (5000 mAh). The companies finally realized buyers would more than happily accept few millimetres of added thickness for more battery endurance and faster charging speeds.
[I release this post into the public domain, CC0 1.0.]