Chosen Solution
Looks like one of the antenna lines on my iPhone appears to be not much -inline- with case, it feels like a small bump. Is it normal? Did you see something similar? http://imgur.com/a/vI8gJ
Such slight misalignment is negligible. The bump is likely caused by internal stress or heat during the machining process.
I think it is normal, my 5s used to do this a tiny bit too. Even if it is not it should not do anything bad.
