Rebooting an old Samsung flip phone

[Teff44]

How do I reboot a Samsung Flip Phone. Voicemail suddenly doesn't recognize my account. Turned it off, then on, per instructions. Now they say to reboot but I don't know how.

[Net - Larry]

Hi Teff44. My name is NET10 Larry. I read your post and I am sorry you’re having some problems. We will check if your phone is properly provisioned in the system. Please check your forum inbox for a message. Click on "New Messages" beside User Control Panel to view your forum inbox. You may also text the key word HELP to 611611 to view our self-service menu with a list of help key words with valuable information. Thank you.