My Android cell phone indicates I received a text message but it doesn't always identify the sender.

[Android Central Question]

For example, I currently have 2 messages shown in a circle above my contacts but I have no idea who they are from. Do I have to search through my entire contact list to identify the sender?

 

[B. Diddy]

Welcome to Android Central! Does it only show a phone number, or nothing at all? Which phone do you have, and which carrier?