In theory, the Apple Watch charger can charge the phone, but in fact, because the power is too small, it is not recommended to use. Apple mobile phone is not recommended to use wireless charging, because the power loss of wireless charging is too large, and the phone is easy to heat, which is unfavorable to the built-in battery, easy to cause the early failure of the battery, in order to make the battery use for a period of time, or do not use wireless charging to ensure that the battery has enough life.
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.
Watch wireless charger can not charge mobile phone. Because for the watch wireless charger, the watch wireless charger is designed according to the watch low-power battery, and for the mobile phone, because the mobile phone battery power is large, the wireless charger must be used when charging the mobile phone, so the watch wireless charger can not be charged with the mobile phone