content: Even with a custom rom, there's no full control. There is still mysterious closed source code in the baseband modems and such, which many involved with tech security believe contain intentional backdoors.  Also, even open-source software can be hacked out of your control, all it takes is some vulnerab  7111  ilities. Furthermore, all the "switches" on the phone aren't real switches, they're software/virtual switches. Basically, we've got a ways to go before we have control over our phones and other devices.