Apple unveils iPhone 4, 720p HD recording

Gyroscope:
Apple has added three-axis gyroscope, a device maintaining orientation or measuring it based on the rotation mechanism of the object. In this case the iPhone 4 which is clubbed with Accelerometer to make it 6-axis motion sensing. Wow! Sony's PlayStation 3's game controller has gyroscopic motion sensing. It's quite possible that in near future, we may see touchscreen apps supplementing the game controllers.

Battery life:
One of the major issues of all iPhone users has been the battery life and hence Apple has put a larger battery in the iPhone 4. The lithium-ion rechargeable battery promises to offer up to 7 hours of talk time on 3G networks while 14 hours of talk time on 2G Networks. Also one can listen to music for 40 hours or watch videos for up to 10 hours. Most amazing part is that users can now browser mobile web for up to 10 hours on the iPhone 4, that is as much as offered by new Intel Atom Pine Trail platform based netbooks.

Bumpers:
Since Apple would be using outer rims as part of its antenna system, the company has come out with its own set of cases to protect the iPhone. Apple has introduced iPhone 4 protection cases dubbed as Bumpers that would be available in white, black, green, blue, orange and pink. Made out of moulded plastic and rubber, these cases are meant to keep the antenna system as well the glass panels safe.