Credit: instructables.com
“Sorry, I can’t hear you your voice is cutting” that is, ladies and gentlemen, the last thing I want to hear after just saying a long sentence for the second time over the phone. If you are living somewhere where you have to go outside every time you make a phone call, or you are suffering from a weak signal that is making your calls drop frequently, this is something you would want to try. I don’t know if it’ll work but it sure is worth a try! The only advice I can give you is to look up your carrier’s frequency and try to find out if the antenna’s dimensions are at a good length for that frequency. Or you can try the dimensions recommended in this post and if it doesn’t work then try my suggestion.
