When I spoke to sprint after they first announced the new sero plan addons they told me that they would be able to get me back to sero without a problem. They said that come oct. 1 the old codes would become active again due to the new sero plans and it would be possible to switch back to sero if you ever had it on your account. If you speak to the right person it is possible. Just make sure you speak to an account specialist not a customer service agent. They don't know anything. They were going to put me back on my old sero plan but I switched to a family plan that comes to around the same cost after a corporate discount. In the end if you had sero before and switched it to get an android or webos phone they most likely will change it back.
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