Its just a roaming notification. That's all.. just telling you that your not on the Verizon Wireless network.
And the circle starts all over again. This 3 page thread contains the answer to the OP's question no less than 2 times.
Lets make it a third for good measure:
The "Delta" or triangle with the exclamation point in it is a warning associated with the operation of the phone. It can mean any number of things, but typically comes with the notification that: 1) you're running in USB debug mode or 2) have lost your data connection.
[quote=kwmayo;292083]And the circle starts all over again. This 3 page thread contains the answer to the OP's question no less than 2 times.[QUOTE]
I understand that the solid black triangle with a white exclamation on the left of the status bar can mean many things and that the message explains which. I don't care.
There is also a hollow black triangle (with an empty white center; looks like the letter Delta) on the RIGHT. I have yet to read what that might be.
I'm new to this forum, but had the same problem and is why I signed up in the first place.
What I did to undo the "Hollow Triangle" right of the signal bars (not in the notification tray), was go the the -menu, then -wireless networks, then -mobile networks, then -system select, then switch from -Automatic to -Home Only, then back to -Automatic. It got rid of the "Hollow Triangle" dilemma that was driving me crazy.