1. If you want to get rid of the iPhone and exercise with Apple Watch alone, you need to calibrate the data first. Apple's suggestion is to find an open area that is easy to receive GPS signals when the weather is good, and bring iPhone and Apple Watch to exercise.

2. For example, if you want to calibrate the data of outdoor running, please open the "Fitness" application on Apple Watch first.

3. Next, choose "outdoor running" and run for about 20 minutes. Of course, a little longer is best.

4. The same is true for walking. We can walk at a normal pace for about 20 minutes during exercise to calibrate the data of Apple Watch.

Of course, if you can't finish it at once, you can finish it several times. Apple Watch's built-in exercise system actually has a learning function. When we take the iPhone to exercise, it will analyze our data in combination with GPS signals, heart rate, steps and other data, so as to understand our exercise law, which is conducive to accurately calculating our exercise data without the iPhone.

6. If you feel that the data calibration once is not enough, you can try to take your iPhone for a week or walk for more than a week, which will improve the accuracy of the sports data of Apple Watch. The longer we use Apple Watch to exercise, the more familiar it will be with us, thus providing us with more accurate exercise data, such as calorie consumption, pace and distance.