Spy software, call interceptor, sms interceptor and a GSM tracking device, are just some basic features of a powerful spy cell phones, but aside from that other special features you might find mind blowing is its ability to include remote control management tool so that upon installing of the spy software, you won’t need to touch the spy sms again.
Such features of using codewords, symbols or characters to remotely activate and de-activate any or all of the features and change pre-defined number on your command is also valuable. Hence, be sure that what you are getting is the genuine and 100% tamper proof and trace resistant.