Last Updated: Nov 16, 2013
You can stop using Google Voice with your Sprint number anytime.
To stop using your Sprint number with Google Voice, visit http://www.google.com/voice and sign into your Google account. From the Settings menu, select Voice Settings and then click on Disable Follow the prompts to remove Google Voice integration from your Sprint number.
Any voicemail or text messages currently saved in Google Voice will be available on the Google Voice website.