what is the difference between a pixel 3 and 3a?
The most obvious differences are in the hardware. Unsurprisingly, the Pixel 3 is faster with a Qualcomm Snapdragon 845, while the Pixel 3a only has a Snapdragon 670. The Pixel 3 XL is also the only one among the family to have a 1,440p resolution. RAM is the same across the board, which is 4 GB.