can
The Apple Watch charger can charge the phone, but it is not recommended to do so because the power is too small. The Apple Watch typically has a 3v battery,
The output voltage is about 3.3v, while the mobile phone battery is generally 3.6v to 4.2V.
For example, the iPhone12 is 20W fast charge, and the 3.3v charger of the Apple Watch is difficult to fill the phone battery.
In addition, if the iPhone does not support wireless charging, there is no way to use the charger of the Apple Watch.
Because the charging power is the same, the charger of the iwatch err eS 7 can provide 20 watts of fast charging power, so it can charge the mobile phone normally and use the charging effect
Under normal circumstances, the charger of the iwatch series7 can charge the phone, but the actual charging speed is very slow. Under normal circumstances, because the iWatch is a low-power electronic device, the theoretical charging current is very small, and this charger charges the mobile phone abnormally slow!
cannot
Do not charge your phone. The battery of the Apple Watch is generally 3v, then the output voltage of the charger of the Apple Watch should be about 3.3v, and the mobile phone battery is 3.6v to 4.2V. Therefore, with the Apple Watch charger (output voltage 3.3v), it is impossible to full the phone battery to 4.2v, so with the Apple Watch charger, you can not charge the phone.