Warlock279 and RedPhantom have some really good ideas there. I agree with those. If you need some help setting up some of those ideas, let us know. I have some custom reflection maps I've used for metals and glass that might help. If you add a few loop cuts into the mirror plane, you could bevel those loop cuts to make it look like seams from multiple pieces as RedPhantom suggested.

Also, as Warlock279 has mentioned, I don't seem to see the reflection of the front case glass in the mirror either. I thought maybe it was an issue with single-sided geometry or materials not showing up on the reverse side in reflections, but all tests I've done indicate that it shouldn't matter. So it's probably ray distance or bounces limitation causing that behavior, but it could also be caused by other issues like object-based ray visibility or even a light path node in the material setup.

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