If I'm in the USA and don't have the add-on described in Koodo's Travelling section: "Under ‘Add-ons’, you’ll also need to add International Voice Roaming. This is a $0 add-on and will enable you to receive calls and texts while travelling abroad." What happens while I'm abroad and: 1) A person calls me? (Do they get an out of service message or does it forward to voicemail immediately?) 2) A person texts me? (error or does it go into oblivion without any notice) The reason I ask is I want to bring my Android abroad to use on Wi-Fi as a computer but don't want to receive incoming texts as they are $0.60 each. There is no option to disable roaming SMS auto-retrieve on my Nexus S. And I would still like calls to forward to Voicemail (I have my voice messages going to a non-Koodo voicemail number for transcription). Possible?