Will tiger blade aluminum bumper affect gps signal?

I have a tiger blade design bumper. I have no problem with wifi. But it kill my gps. Now I'm using element case vapor 4, it don't give me such problem on gps. Tiger blade design edge is quite sharp. Not comfortable to hold.

where you buy this?

I used blade bumper and vapor 4 on my iphone 4. It will affect the signal drop and affect the gps signal. Example, the iphone 4 having full bar in certain area then once using those aluminum bumper then it will drop 1 - 2 bar. For GPS, it used some time to lock the gps signal.

Any iphone 4 case recommend which similar like capdase soft jacket?

how much it cost?

Finally I solved my Vapor 4 bumper which affected my signal and gps issue. What I did is apply another 3m double side tape inside the vapor 4 like how to shock absorber pad was stick. Now I don't face any signal lost problem as well as my gps signal. GPS signal lock satellite like normal.

Any screen protector for iPhone 4 won't scratch easily? My screen protector scratch easily and almost replace it every month.

I really feel curious why people like to stick the sticker on the home button. Mine iphone 4 fixed twice about the home button and the culprit the home screen button spoiled is cause by the home screen button sticker. Because when i apply the home screen button sticker on it, it pop up and more easily being press especially when i put in the tight jean.

Where can I get xsp crystal???