I've now seen several videos of people opening the back cover on the N900 (covering the battery, SIM card and Micro SD slot). As far as I can see, you just pull the cover off, without needing to slide a release catch. Presumably the cover has tabs which deform slightly to click into place. All the videos make me wince with the creaky, crackly sound the case makes as it's removed and replaced. I worry that it might break after a while, especially if you change a lot of Micro SD cards. What do other people think, especially those who have an N900 in their hands? Are there other Nokia devices which use a similar cover, and if so, how have they been after a few years' use?