Received an unknown call without the '+'. He called out my name and said this is his new number. I asked him who he is, he says he is my long time friend and asked me to guess. I asked again who he is, he questioned me saying why i can't even recognize his voice. he say he will text me and hung up. I tried to called the number back and it went straight to the voicemail. few of my friends had encountered such a call when i checked with them, one of them almost transferred money to the unknown caller which he made a police report.