Basically what I am saying is that the networks have us by the balls. It doesn't matter which network it is. They can lock any device used to access their network whenever they see fit. Read any of the networks TOS. Like it or not, but you don't have any rights on the device until it becomes yours. Even the CPA rights do not apply to devices obtained on contract. It's all BS, but its in the TOS (yes even for prepaid SIM's) that we all agree to, either in writing or just by using the network. And we have to put up with it as there are no alternatives, or never will be.
Now why, if your account is suspended for arrears, do you then think that putting your SIM into another device would magically make your account work?