1. Subscription to DUO Service is Php399/30days on top of a Globe Plan. 2. Once you are subscribed to Duo, you will be given your Duo Landline number. Now, your mobile phone and SIM will have two (2) numbers: your current mobile number (i.e. 0917-XXX-XXXX) and your Duo Landline number (i.e. 02-XXX-XXXX). 3. Upon activation, [...]