it will have a check mark beside it
A check mark means the person saw the message.
You can't tell if someone has read your text message. But there will be a little 'r' beside the check mark in BBM (Blackberry Messenger) and that will show that it's been read, but only with BBM, not text messages.
Blackberry Curve
The check mark is the notification that you have sent the text and it has been received to your destination.
It means the person you sent the message to - has seen it.
It means the person you sent the message to - has seen it.
In Messenger, a white circle with a grey check mark indicates that your message has been sent but not yet delivered to the recipient. This means the message is on its way, but the recipient's device may not be connected to the internet or they may have notifications turned off. Once the message is delivered, the check mark will change to a filled-in version.
After you send a message, it automaticly sets it's self as sent. You can mark one or more message(s) by putting a check to the left of the message, under "More actions" you will find "Mark as read" (if it is unread), click that.
The message was sent successfully.
Check mark that is purpple
That means that you lost connection or maybe the message takes a while to load... There are lots of reasons but that's all i could think of at the moment...^_^!,Allyson T-Cup(Add me on Facebook) I never decline my Friend requests!:)^___^