iPhone 4 goes far in music playback time
CNET Labs tests the iPhone 4's music playback time and the results far surpass Apple's promises.
CNET Labs has returned the official
When we conduct our music playback battery life test, we start with a fully charged phone. The display is set to a brightness level of 50 percent, and the backlight is set to turn off after 10 seconds. All phones are set to the same volume level, which we measure electronically to ensure fairness and consistency in testing. If the phone includes an EQ setting, we set it to "flat." We play a group of repeating audio files and record the amount of time that passes until the phone's battery drains and it shuts off.
Times in chart are in hours
|Music playback time||59.02||35.4||25.5||28.4|