# Restrictions on the Use of Components by Plug-Ins
The following components are unavailable on the plug-in page during plugin development:
- button whose open type is one of the following:
- contact (Opens a customer service session)
- getPhoneNumber (Obtains a mobile number of a user)
- getUserInfo (Obtains user information)
- open-data
- web-view
The following components are version-specific:
- navigator requires base library 2.1.0
- live-player and live-pusher require base library 2.3.0