Hi, I left my phone at friends home. No one will be home all weekend, so I can't get it until Monday.
Is there a way which I can wirelessly divert calls to my 2nd phone which I have?
There is no way of doing it.
However phone your phone number and when in voicemail press * and enter your pin (default is 0000, if you have not changed it)
Via the menu you can change your message saying you have not got the phone you can be contacted on 07*****. At least this way people who phone would be able to get hold of you.