my analytics say my device is an iphone 8 but i have a iphone

What exactly says its an iPhone 8? If you are seeing something like iPhone8,1 that is the internal identifier of an iPhone 6. It does not need to make sense to you specifically. Its Apple's own internal identifier, it has nothing to do with the device's commercial name.

What about the crash report and bug types?

The iPhone will log all those events, its not a sign there's something specifically wrong.

Unless you specifically know how to read those analytics, they are pretty meaningless.

You may see something like "model 8,1" which does NOT refer to the marketed model of the phone. It's more like an "edition" of the iPhone.

Model 8,1 would mean it's the 8th "edition" of the iPhone.

~Lyssa

That is Apple’s internal model identifier for the iPhone 6S.

It may not make sense to you, but it is a fact. As to your crash reports, no one other than Apple engineers will be able to decipher them.

As below.

OK. Should I be concerned about? I can assure, I do not have an iPhone 8,4.