Today I bought white one and found something weird. From the release day I have black 8GB model, and no problems, but white one has some differences in vibrating. Well, at 8GB vibrating is normal and sound of vibration is very low, fine for me, but white model vibrating sound is weird. It sounds loud, like some cheap phone. I don't know how else to describe this sound. Pls could anyone compare these two phones and vibrating sound or give me some link about that. I was googling but didn't find any info about this feature. Is it possible that white has different vibration hardware? Did Apple tried to improve vibration sound feature?