Today's inaugural test of the presidential alert system was apparently not without its glitches.
Some AT&T, Verizon and T-Mobile users are reporting they didn't receive the message despite being on a compatible phone and near a cell phone tower. Problems with receiving the messages were reported on both iPhone and Samsung phones, according to user forums.
Some 225 million cell phone users around the U.S. were set to receive the message at 2:18 ET today. It was the first test of the National Wireless Emergency Integrated Public Alert and Warning System, which is designed to be used in the event of a national disaster, terrorist attack or threats to public safety.