The OnePlus 9 Pro, which OnePlus unveiled yesterday, has already been put through JerryRigEverything's durability test. Unsurprisingly, OnePlus' latest flagship smartphone passes with flying colours, even with its dual-cell battery design.
https://www.notebookcheck.net/The-OnePlus-9-Pro-survives-gruelling-durability-test-despite-its-dual-cell-battery-design.529174.0.html