lcoughey wrote:Without even knowing what variant of BlackBerry you are referring to (BBOS, BB10, Android), I believe that a factory reset securely erases the device. I haven't confirmed this, but haven't yet seen anyone who has been able to prove otherwise.
Jared wrote:Hard reset is faster and less straining on the service area, so is preferable to a power cycle in most cases. Most drives will really only survive so many power cycles before dying completely. Just my two cents.