To set a new value for second phone number, use the command unit/update_phone2:
svc=unit/update_phone2¶ms={"itemId":<long>, "phoneNumber":<text>}
 Character '+' in phone number should be replaced by code %2B.
| Name | Description | 
|---|---|
| itemId | unit ID | 
| phoneNumber | new phone number | 
{ "ph2":<text> /* phone number */ }
| Code | Value | 
|---|---|
| 1002 | new phone number matches the old one, or such number already exists | 
Other errors can also occur.