Flip Phone Screen Cracking May be Due to Stress From Hard Third Party Protective Cover

The case of my Samsung Flip Phone cracked after being dropped on a hard floor, resulting in an intermittent fault. So I purchased a third party case to protect the replacement phone. However, I noticed that when folded to 90 degrees (halfway closed) the hinge mechanism appeared to be putting pressure on the phone's hinge. 

After a few days the screen protector started to lift and bubble, along the fold in the screen. I removed the base part of the case, leaving just the two parts covering each side of the phone, this eliminated the problem. It may be that cases of this type are causing, or making worse, flip phone screen cracking. I noticed the same problem with two third party covers of the same design, from two different suppliers, on two Samsung Galaxy Z Flip 3 model phones.

Samsung Galaxy Folder Android Phone

According to DDaily newspaper, Samsung is preparing to release a flip phone running the Android 4.2  (Jelly Bean) in Korea ("Galaxy, there comes a folder phone ... Samsung Electronics 'Galaxy folder' domestic market", yunsangho, 16 July 2013"). To be called the "Galaxy Folder", this will have a physical keyboard, as well as a small touch screen. This is a format I would prefer as you can more easily use the physical keyboard for typing quickly. The microphone is placed closer to the month with a flip hone making sound quality better. Also the cover can be quickly closed to cut off a call and protect the screen. Previously I suggested a "3D Printed StarTrek Style Flip Phone Case" to convert screen only phones.