We know quite a lot already about the next-generation's iPhone design, but we actually know very few about the next-generation iPhone's features. Quite certain: - 4 inch display - 4G LTE - Different design, but similar to iPhone 4 - Smaller dock connector Quite uncertain: - NFC Unknown: - Better speakers (because of better speaker grill?) - Camera (same or differences?) -- 1080p 60fps -- More lenses? -- Better in low-light? -- More megapixels? - Battery (how will they manage with LTE?) - 45nm A5 chip (like current iPhone 4S), 32 nm A5 chip (limited edition iPad 2?), 32 nm A5X chip (iPad 3) or unknown 28nm/32nm A6 chip? To be honest, we know very little about the next-gen iPhone: all that seems certain is the design tweak, the 4-inch display and 4G LTE (because of iPad 3). What do you think: which new features the next-gen iPhone will get? What will be Apple's killer feature? Will the killer feature be the bigger display or 4G LTE, or something that hasn't been leaked yet?