I'm having real issues in sending text messages to an iphone located in the US while I'm located at Portugal. I contacted my ISP and there is no issues with my plan, I then tried to install other messaging apps and it did work! My phone came with Google's text app and also voice app as it's regular choice of communication! I tried to call him and it immediately went to the voicemail! I can't neither text or call him through the Google's choices and I have absolutely no idea why!