are you using the stock messaging app, and if so, have you gone into the settings to verify the auto retrieve setting is enabled? Did this only start with the install of GV? Sprint has built in integration with GV where when you install it, you have two options, use the GV number as your all in one number, or, keep your regular number/GV number separate. Which option did you choose when installing? Uninstall GV and check Sprint's website for full details on Sprint's GV integration with your phone so you know what option to use when installing..