will this work when my i-phone 3GS is locked, or do I need to leave the i-phone unlocked and the app running on screen?

I have tried several pedometers on my i-phone and although some do work relatively well, I need to leave the phone unlocked in my pocket in order for it to record the data. If I purchase the Nike + sensor and attach it to my shoe, will the i-phone record the movements even when locked and playing music?

Nike + iPod Sensor

Nike + iPod Sensor

Product No Longer Available

2 Answers from the Community

  • Best Answer:

    As long as you start your workout in the Nike+ App, it will continue to run while you exercise, whether your 3GS is locked or unlocked. It will continue to run until you hit the End Workout button or you have reached the specified goal under a preset workout routine.

  • mostly stuff work when the iphone or ipod is on non locked and the screen is open