I've been using an iPhone 5s for the past couple of years, and the internet has led me to a particular mod for it...so I bought this kit from eBay (black with black buttons) to try out. It has a nickname called the "iPhone 6 Mini" mod.

http://www.ebay.ca/itm/Rear-housing-for-iPhone-5-5s-back-battery-door-replacement-mod-to-iPhone-6-mini-/381178400878?var=&hash=item58c000d06e:m:m-uxI4Iq6HW4TEagox-PMWw

OEM iPhone 5s Rear Housing

eBay Rear Housing Kit for iPhone 5s

Installation:

Bottom: iPhone 5s with front screen removed, Top: Black iPhone 6 Mini empty housing

One hour later..internal components of iPhone 5s removed from the original housing (top)

Another hour later..internal components have been placed in the new black housing

Left: Finished iPhone 6 Mini, Right: iPhone 4s for size comparison

Left: iPhone 6 Mini, Right: iPhone 4s

More photos to show the curvature on the edges

Review: The quality of the case is decent, but the plastic/glass cover for the rear camera produced less sharp images when taking test photos. I believe that it may depend on the seller you buy from on eBay. Not all the mod kits are exactly the same, as I have seen ones that have a rear camera bezel that sticks out, similar to the new iPhone 6/6s feature. It also feels like the phone is lighter, perhaps by a few grams. The buttons work flawlessly, so I have no reason to switch back to the original 5s rear housing anytime soon. I'll be keeping it like this unless the case cracks some how..

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