Material ok wifi easily disturbed

Today I get my envelope aluminum. I was very pleasantly surprised. The mobile phone looks valent lot, as with the standard shell. Although the silver color is not the same as the scope of the S3 anyway it like it very much. But as a shortcoming, I must say that the shell is very difficult to remove. I 1 times a day the battery change I'm curious how the quality is reflected in the next few days. Bear in mind I admit that the wireless connection is also a little disturbed by the shell. From 3 to 2 bars down. But I am very satisfied