Yes, your Ooma account would not be restricted. With the Ooma Mobile app loaded & having the login credentials to your Ooma account, you should be able to use it.
http://www.android.com/us/developer-dis ... ement.html
https://market.android.com/details?id=c ... oomamobile
*** IMPORTANT NOTICES - PLEASE READ ***
Use of the Ooma Mobile application REQUIRES an Ooma account and a prepaid calling balance. If you do not own an Ooma Hub or Ooma Telo, you WILL NOT be able to use the Ooma Mobile application. Your Ooma Mobile username and password are NOT the same as your My Ooma login. Please visit https://my.ooma.com/mobile to retrieve your Ooma Mobile username and password.
Be aware that some mobile network operators prohibit or restrict the use of VoIP (Voice over Internet Protocol) over their network. They may prohibit the use of VoIP over their network or impose additional fees and/or charges when using VoIP over their network. By using Ooma Mobile over 3G, you agree to familiarize yourself with and abide by any restrictions your cellular carrier imposes and agree that Ooma will not be held liable for any charges, fees or liability imposed by your carrier for using Ooma Mobile over their 3G network