The watch works fine. It is my second one. I used my first one for about 4 months. It went defective after a run / walk in rainy weather. It seems not to be waterproof.
The manual is not enough. Why cant i use it any sim card? Why cant i configure apn and other on the watch? only one sim worked and the clock is not exact (12 hour!!! difference), why cant i configure on the clock?