How did my messages disappear?

Luna1317 wrote:

I was sending a message to client, and all of sudden the previous messages disappeared. They contacted me with a new number, but all the messages from the old number were gone. I never deleted them; I have messages from 2010 I haven't deleted, because I need them for work. So I don't know how the messages from this one person disappeared. This has never happened to me before, and i need help.

I don't know if this matters, but they're an aneroid or galaxy user.

Text message is part of the icloud/itunes backup, so long as you didn't synced them to the cloud, you can restore from your backup.