Verizon's 4G network is still down after experiencing problems yesterday, shutting out around 500,000.
In a tweet, Verizon said it is aware of the outage, and is working on a fix.
Right now there's only one 4G phone, the HTC Thunderbolt, that can run on the network. (That changes tomorrow with the release of Samsung's DROID Charge.)
There's also a 4G wifi hotspot and two USB modems.
Thunderbolt owners are reporting that their phones are only running at "1x," which is slower than 3G.
We'll let you know as soon as Verizon says the network is up and running again