+=== startChangeNumber
+
+Change an account to a new phone number with SMS or voice verification.
+Use the finishChangeNumber command to complete the verification.
+
+NUMBER::
+The new phone number.
+
+*-v*, *--voice*::
+The verification should be done over voice, not SMS.
+Voice verification only works if an SMS verification has been attempted before.
+
+*--captcha*::
+The captcha token, required if registration failed with a captcha required error.
+To get the token, go to https://signalcaptchas.org/registration/generate.html
+For the staging environment, use: https://signalcaptchas.org/staging/registration/generate.html
+Check the developer tools for a redirect starting with signalcaptcha:// Everything after signalcaptcha:// is the captcha token.
+
+=== finishChangeNumber
+
+Verify the number using the code received via SMS or voice.
+
+NUMBER::
+The new phone number.
+
+*-v*, *--verification-code*::
+The verification code.
+
+*-p* PIN, *--pin* PIN::
+The registration lock PIN, that was set by the user.
+Only required if a PIN was set.
+