Sadly, in my case the lens has broken as a result of
1/apps that activate the camera programatically, pushing itsself out of its car cradle physically damaging the lens assembly
2/ Power on lens extension when held in hand like a phone, lens in palm of hand.
I emailed to samsung and suggested they use a proximity sensor ( very common on phones) mounted on the front of the device ( lens side) to check the path the lens will take during extension is clear, or possibly even using data from the focus beam. I suggested that If it cant extend safely then it should not, rather than risk damage to the motors inside the lens. Samsung could actually apply this to all their cameras.
I also suggested the default on power up should be to not activate the camera app, which extends the lens ( after all this is a hybrid device) it may be possible for devs to alter this behaviour ?
It also occurs to me that developers who make device specific apps for this device could win some serious respect if they used the accelerometer Z reading to ensure the camera wont activate when device is lens down/screen up avoiding the lens causing the phone to do pushups which also bends usb connectors.
I know this belongs in the development forums for this device but I can't access them due to having less that 10 posts. Hope someone can add it for me Many apps can activate the camera programatically, it's worthy of consideration as a lens fix costs $200.00 and is not covered by wararanty.