Probably not, the WATCH has a special charging head. Apple Watch has wireless charging function, it is Apple's first mobile device with wireless charging function. The Apple Watch uses a MagSafe-style wireless charger. It magnetically attaches to the back of the Apple Watch and is then charged inductive. It's easy to use, no precise alignment is required, you just hold the joint close to the back of the watch, and the magnet in it will automatically snap the joint into place. Although it seems to work the same way as existing wireless chargers on the market, for a wearable device that may need to be charged every day, supporting wireless charging can bring no small convenience.
1, can not, because the charge is not satisfied, the Apple Watch battery is generally 3v.
2, the output voltage of the Apple Watch charger should be about 3.3v, and the mobile phone battery is 3.6v to 4.2V.
3, with the Apple Watch charger (output voltage 3.3v), it is impossible to fully charge the phone battery to 4.2v. So with the Apple Watch charger, you can't charge your phone. This situation is nothing else
It is not possible to charge the mobile phone, because its model is completely different