What are the similarities?
There are no major differences in the display between the iPhone 12 and iPhone 13: both have the same resolution (2532 x 1170 pixels at 460 ppi) and an OLED display. In addition, despite other plans in the 13 Pro, they have kept the 60 Hz refresh rate on the 13.
With the iPhone 11, you’re given an LCD display and a resolution of 1792 x 828 at 326 ppi.
With the iPhone 13, iPhone 12 and iPhone 11 you can take pictures with a dual-camera setup that includes a wide and ultra wide lens. All models can take 12MP pictures but have different apertures. More about this in the differences section.
It is also important to mention it’s not just megapixels that matter; software is also very relevant, which is connected to the processor and ensures better image processing. The improvement of the software ensures that with every new iPhone the quality is at least a bit better than before.
The iPhone 13, 12 and 11 all measure 6.1 inches diagonally - so you won't notice any difference in phone size.
The integrated storage on the iPhone 13 is available in either 128 GB, 256 GB or 512 GB. And here I have to comment briefly that I'm glad the standard model will finally come with 128 GB from Apple. The iPhone 11 and iPhone 12 are sold with 64 GB at the base versions, which I don't think is enough in 2023.
You can use the front camera to unlock the phone via facial recognition on all three models.