iPhone 4 16GB + EXTRAS to swap for an Android Phone - MAKE OFFERS !

Looking to swap my iPhone 4 16gb Black for an android phone. Please make sensible offers and not offer to swap some cheap phone. I would LOVE a Samsung Galaxy S3, so if you want to swap that then i will put some money towards it! Please DO NOT CALL ME, just email and text and i will reply right away. Genuine seller, thanks :)