Overall these two models are extremely similar. The iPhone 7 and iPhone 7 Plus are both good smartphones that come in the same storage capacities of 32, 128 and 256 gigabytes.
Both devices are offered in gold, silver, rose gold, black and jet black color options and they have almost the exact same functionality. The notable differences are in the size of the screens and the battery life. The 7 Plus has a 5.5 inch display while the iPhone 7 has a 4.7 inch display. The 7 Plus screen also offers better clarity since it has full HD resolution of 401ppi versus the iPhone 7 with 326ppi. You’ll also get a few more hours of battery life out of the larger iPhone 7 Plus.