Good day, I have just returned my e13ctron hybrid after seeing to much of a signal reduction do to it. My wife and I are very upset and are looking for some alternatives. I was wondering if any one who has a Vapor Comp and do a field test with and with out the case for me. Open dial pad. Type *3001#12345#* you will be in field mode this mode will give you a numerical value for your signal. (you can also tap on the value and it will swap to bars if you want to get an idea on how many bars are value) A full bar would be -80 A Low/No signal would be around -110 My e13ctron case I was getting -82 with out the case and -107 with it. Also I am with ATT. I've done test with both of my phones side by side same results Edited: this is with the iPhone 4s Thanks.