Verizon Wireless is experiencing yet another nationwide outage of its 4G/LTE wireless network.

The problem seems to afflict the authentication process that authorizes your 4G device for access to Verizon’s data network.  If your phone remained on overnight, you likely still have either 3G or 4G service.  But if you are powering up your phone this morning, or reboot, chances are you don’t have any 4G service.

For certain Samsung phone owners, the problem is worse — you don’t have any data service at all unless you are in range of Wi-Fi.  Samsung phones are notoriously poor at stepping down consistently to 3G speeds when they cannot successfully handshake with Verizon’s 4G network first.

Verizon has yet to confirm there even is a service outage, despite reports pouring in from around the country, so it is probably going to be awhile before service is back.

[Updated 10:38am ET:  Service is now gradually returning across the country. If your service is still interrupted, it should now be safe to reboot your phone.]