but:
The aluminum casing shields the WIFI antenna of the iPhone. After mounting my home network is hardly ever receive - even if I am 1m next to the Access Point! I have repeatedly tried different things - it's definitely the shell causes this.
Even the electrical isolation of the casing from Antennenbereicht the iPhone in the top half of thin scotch tape does not help.
The Mobile (incl. 3G) reception is unaffected.
Who should use more often rather similar to a WIFI Hüllse plastic, silicone, grab.