Change IMEI number to obtain tablet data plan? It looks like T-Mobile offers very cheap data-only plans, but these are only available for tablets. I have read that this is enforced by tracking your IMEI. I was wondering: Is it possible to change your phone's IMEI to a tablet's IMEI, to trick T-Mobile, so that you can get a data-only plan. Nobody really needs talk and text if they have data. Thanks!
This would undoubtedly be a violation of T-Mobile's terms of service.  To do so, though, you would need to create a custom ROM and modify the ro.serialno system property.  Alternatively you could try to modify Build.java and pass in a different value to Build.SERIAL.  It's unclear whether that's how T-Mobile is retrieving the IMEI number though.