I noticed yesterday, I started getting 2 SMS texts per incoming SMS. One on Google Voice App, the other on Messanging (from GV's Montana number). It looks like Google Voice has a setting (which I either forgot about and set off, or a new setting), where SMS texts are forwarded to your phone. That's fine if you don't have a Smart Phone running GV or Google Voice, or have unlimited texts. I have no unlimited texts, so I've been getting charged for those SMS's. Easy fix is go to your Google Voice settings on the WEBPAGE (not App), and click on the Phone tab under Settings, and uncheck the Receive SMS texts to this phone. I also went to the My T-Mobile webpage and checked off block charged text messages.