The first two models from Apple’s iPhone 12 have started shipping, and iFixit are busy taking them apart. The iPhone 12 and iPhone 12 Pro are surprisingly similar inside, as iFixit points out that the cheaper model has a plastic spacer in the spot where the Pro puts its telephoto lens and LiDAR sensor.
https://www.ifixit.com/Teardown/iPhone+12+and+12+Pro+Teardown/137669
They also have the same size battery, at 10.78 Wh, which is slightly smaller than the 11.91 and 11.67Wh batteries iFixit reported in last year’s iPhone 11 and 11 Pro.
The iPhones open on a different side this year, and have much larger logic boards. That maybe because of the addition of 5G technology, which may be squeezing the battery size Apple can fit in there. iFixit already streamed a video teardown of the new iPhones.