I will be going on international travel and looking for ways to use my iphone there. It's under contract with At&t, so they don't unlock it and their international calling rates are high. I am applying for jobs, so would like to keep my current number active for employers to call. Is there any way/app which allows to leave the iphone here with a friend so that people can call on my current number and at least leave a voice message and I can check or receive call while outside? Can I forward my calls to international number and how does it work, does it come under local or international plan?