Now that these are getting cheaper and have decent specs I would like to use a couple as Ipod replacement. I want it to function in every way but I want ALL cell service blocked even 911 and remove the sim card warning. Is this even possible or am stuck buying 4 Ipod 5's? the main reason for this is I HATE ITUNES. The only thing apple in my house are these Ipod 4's and now they cant be updated.