Just an SMS, and you will get all you need. ie
1. Unread SMS'
2. Missed calls that are not viewed already on the phone.
Optionally you can also set Auto Forward, once set:
1. SMS' will be forwarded as and when they arrive.
2. Call detail will be forwarded as and when the call starts ringing.
1. Set the passcode after install.
2. From any other phone SMS to this phone.
So install and just relax!
Note: You need to use different phone to send SMS to your phone.