Give it a few months.
This is like a 1980s plastic lunch box. The moulded hinge always snapped in half after about 3 months regardless of what you did. Cue optimus prime letting your lunch out all over the floor.
I think they are failing because it was a fucking stupid idea.
Edit: If anything I want NO mechanical components on any handheld device I own because in the last 40 years of my life everything has broken mechanically eventually. Home buttons, volume controls, connectors, battery holders everything.