For fingerprints my t-shirt works well.
If I get greasy fingerprints all over it from texting while eating or whatever, I use a microfiber cloth and some glass cleaner (the aerosol can stuff, invisible glass is my favorite) - same way I clean the windows on my car.
After all, the iPhone is glass. Just be careful to not get any of the glass cleaner inside the speakers/mic/dock connector/etc. I personally haven't had any issues wiping around the home button with it, but I wouldn't necessarily recommend it
If I get greasy fingerprints all over it from texting while eating or whatever, I use a microfiber cloth and some glass cleaner (the aerosol can stuff, invisible glass is my favorite) - same way I clean the windows on my car.
After all, the iPhone is glass. Just be careful to not get any of the glass cleaner inside the speakers/mic/dock connector/etc. I personally haven't had any issues wiping around the home button with it, but I wouldn't necessarily recommend it