I recently noticed that the Nokia N9 only buttons on the side for lock/power and volume rocker are bit noisy especially when I had the casing removed. These buttons though still work perfectly and don’t exhibit any malfunctions. They are just bit loose that creates noisy, and vulnerable to movements and pressures when you press. The only solution to this is to pop in your Nokia N9 in its rubber casing.
Are you also experiencing the same thingy on your Nokia N9? Let us know through commenting below.