I recently Upgraded my Iphone 3G-S to Iphone 4S. I love my phone. when I just pulled my Iphone 4S from my pocket to make phone call at that time I saw a some specs on back glass. I think It is just a dust on upper surface so I took a cloth and wiped it but it didnít fix my problem. How possible is that? It seems that glass is perfectly attached to back. Everything is sealed extremely well on all sides of phone so how is it possible to dust go inside. I will post the picture later when I got a good camera which can capture dust under a glass. So, Anyone have any solution for me how should I remove dust which is going under back glass? and how to prevent from more dust underneath of glass?. It is not a big problem but it is irritating me.