Dust under the back glass

[magnus.m4]

My S9 was month old and few days ago i notice dust under the back glass on the bottom. Is this normal or i need to ask for replace phone.

https://drive.google.com/open?id=1lUdD4H7r73vGKDHyTLbvmYzzSlsEnuK1

https://drive.google.com/open?id=1yEDWLL5UcOUeUTqyzIjI3NwaAs3tk9iN

 

[ijuanp03]

My S9 was month old and few days ago i notice dust under the back glass on the bottom. Is this normal or i need to ask for replace phone.

https://drive.google.com/open?id=1lUdD4H7r73vGKDHyTLbvmYzzSlsEnuK1

https://drive.google.com/open?id=1yEDWLL5UcOUeUTqyzIjI3NwaAs3tk9iN

I'm surprised nobody ever replied to you. I don't have an S9 but having the same issue with my Moto X4. I'm quite OCD and I think it's due to the glue not sticking entirely along the edges.