Caller ID: SMS, called work asking for CEO (by first name only). My CEO wasn't in and asked this person if he wanted his voicemail. The man said he was trying to get back to him and asked for his cellphone. I told him I wasn't authorized to give out that information and then he hung up. Most likely scam or soliciting. If he was trying to get back to him, he'd have his direct number. I also received other various "SMS" numbers resulting in hang ups.