How do you call a us mobile from UK?

To call a US mobile from the UK, you need to do the following:

1. Dial the international exit code for the UK, which is `00`.

2. Dial the country code for the US, which is `1`.

3. Dial the area code of the US mobile phone.

4. Dial the 7-digit US mobile phone number.

For example, to call a US mobile number with the area code `(213)` and the phone number `123-456-7890` from the UK, you would dial:

`00-1-213-123-456-7890`