This remix of the original design by b2vn fixes two issues with their V2 version of the cover.
after few months of using the cover, it becomes loose. It flips back by itself during calls with the slightest shake of the camera, especially when it is leaned forward. Special grooves allow the flip cover to lean back.
it is not so easy to lift the cover, as it is very flat and sticks to the camera. One gets used to it after some time, but it's more convenient with the handle provided - you just get hold of it it and flip back.