Updating iphone 3gs to new software
Apple claims that the 3GS can last for up to ten hours of video, nine hours of web browsing on Wi-Fi, twelve hours of 2G talk time, or five on 3G, 30 hours of music, or 300 hours of standby.A magnetometer is also built-in the i Phone 3GS, which is used to measure the strength and/or direction of the magnetic field in the vicinity of the device.Sometimes certain devices or radio signals can interfere with the magnetometer requiring users to either move away from the interference or re-calibrate by moving the device in a figure 8 motion.The i Phone 3GS also features a Compass app which was unique at time of release, showing a compass that points in the direction of the magnetic field.As on previous models, all data is stored in flash memory and not in the SIM and it does not offer any options to expand storage.Initially it was only available in 16 and 32 GB though an 8 GB model was later released, with Apple discontinuing the 16 and 32 GB models, forcing those needing more storage to select an i Phone 4, or buy an older model 3GS.The Bluetooth server on the i Phone 3GS has also been slightly improved adding support for Bluetooth 2.1 specifications.
Color inversion reverses the color scheme from black on white to white on black, while Text Zoom allows users to zoom into a text on the screen.
in Australia and Japan on June 26, and internationally in July and August 2009.
The i Phone 3GS runs Apple's i OS operating system.
There are two ways to activate Voice Control: hold the Home button while in the home screen for a few seconds; or, change the effect of what double-clicking the home button does so it will activate Voice Control (only on i OS 3.x; on i OS 4 or later, double clicking the Home button opens the multitasking bar).
Voice Over, Color Inversion, and Text Zoom were introduced as exclusive features to the i Phone 3GS.