John Mayer's sleeve tattoo was on full display as he strolled through NYC on Thursday. He's keeping busy with late-night jam sessions and photography in the Big Apple while waiting for his Battle Studies tour to resume on July 16 in Charlotte. The gadget-loving musician also already acquired the new iPhone — check out Geek's hands-on review. John wrote on his blog, "I look forward to hours of Fruit Ninja while enjoying a stable romantic relationship sometime within the lifespan of the iPhone 4. Don’t snicker. Just wish me the best."