Its not about the screen size or the models, there are other things that make your iPhone 7 version different from the rest. The question is: Do You Have The Faster or Slower Model? That will be answered by your storage capacity.
According to TNW, Apple made different versions of its phone, one is better than the other. iPhone 6s, Apple's previous model is the best example of this. Utilizing different processors, the assortment of it provides disparate capacity. Latest, iPhone 7 received the same treatment, and now, it is the modem components.
Aside from the stated facts, 4G modem chip is also part of the problem. Apple sourced different modem chips such as Qualcomm and Intel. According to CellularInsights, A1660 and A1661 models (Qualcomm) outclass the other A1778 and A1784 (Intel) models.
How will you know if you are guaranteed with the best iPhone 7 version? Aside from buying a model with higher memory capacity, you should be able to get the Qualcomm modem model in the United States, China, and Japan. Apple's iPhone 7 Versions may differ delivering performance, regardless, the two can still carry out application task like no other.
