With iPhone 3GS generally not well served ...

So I have a small part now almost 1 month and my enthusiasm has its limits. I'm always looking out the frequencies 100% free of other favorites are (ie noise only) while the reception is partially really cruel. I use the iPhone 3GS. It is while driving next to me on the passenger seat or in the center console in the cup holder. Until now I could test it only in my Kia Ceed but I strongly suspect that the receiving gelich in each car is good (every radio station is running properly)! In addition, I do not live in a big city, therefore one could also argue that nich "interfere" countless störfrquenzen.
Conclusion: Who has the iPhone 3GS unfortunately bad luck in terms transmitter. Apparently there seems to be (still) no reasonable device :(
ps. a buddy with his iPod classic better cards. Its reception is knotless rarely it roars times. If I be to the iPhone device plugs comes only: no compatible device bla ...
But for the cheap price you possibly should still test times.