I purchased my iPhone 7 in 32 GB varient last year. Since everyone is know about the performance that Apple provides to us. Built quality, durability and performance of this device is awesome. But there are some bugs that you may face after some time. Lets talk about them: -
Home Button : - the home button of this device does not works properly after few months of purchases. But the touch id works perfectly.
Camera : - the another drawback that I face was about its camera. Its front camera stops to working after few months.
Some times I face a minor line on the screen. It does not affect the touch issues, but still it looks odd.
Also the price of this device are still so high. And I will never recomend you to buy this device in such a high amount. By the way, you can go for any decent single hand used device instead of new one. Thanks.hope this information helps you.