Problems with the "Play Mobile Preview" and the real play session on android

Development Platform & Builds Mobile
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1

The scene is only one FBX Mesh that is supposed to be a room, but here what happens (only in the Mobile Preview)

2

Your link doesn’t work. Please attach a photo to your post.

3

Screenshot_2017-06-23-14-17-47.jpg
Screenshot_2017-06-23-14-17-47.jpg1920×1080 238 KB
Screenshot_2017-06-23-14-17-47.jpg
Screenshot_2017-06-23-14-17-47.jpg1920×1080 238 KB

4

How many vertices in the mesh? Index buffers are 16-bit on device.