That's the fix described here - http://www.fastcompany.com/1663768/iphone-4-antenna-fix
Got the link from my co-worker.
super simple and worked for me. i demonstrated to several people today.
thats very odd it didn't work for others. does it work for you with a case or a glove? tape is no different?
too funny i show up with iphone 4 and everyone wants to see glitch. thats all they wanted to see. of course they all ask if i knew ahead of time about problem and then giggle at my expense when i say yes. i wanted my new toy damit!