The main differences lie in the processor and storage space.
First of all, in terms of appearance, iPhone 8 adopts a new glass body design, which is smoother and more beautiful than iPhone 7, and supports wireless charging. The iPhone 7 uses a metal body design, which is relatively heavy but also more durable.
Different appearance: iPhone 8 uses a double-sided glass design, and the back of the phone is a high-hardness glass panel. The processors are different: iPhone 8 uses an A11 chip, and iPhone 7 uses an A10 chip.
The CPU parameters are different. iPhone 7 has a built-in Apple A10+M10 co-processor and the number of CPU cores is four. iPhone 8 has a built-in Apple A11+M11 co-processor and the number of CPU cores is 6 cores. Different memory capacities: iPhone 7 has two versions of memory: 32g and 128g; iPhone 8 has two versions of memory: 64g and 256g.
Different ROM capacities: iPhone 8 has 64GB and 256GB versions, while iPhone 7 has 32GB and 128GB versions. The processors used are different. The processor used in the iPhone 7 mobile phone is Apple's A10 Fusion quad-core processor; the processor used in the iPhone 8 mobile phone is the new generation A11 Bionic processor.
There are the following differences: the body material is different; the iPhone 7 has a metal back cover, while the iPhone 8 returns to the era of double-sided glass bodies. Both the front and rear of the body use the strongest and most durable glass panels on the iPhone; the body colors are different; iPhone 8 A new "sun red" color scheme has been added.