Spyphone has introduced a spy software that can convert your GSM phone into a spy cell phone. It is a powerful software that can track devices, intercept sms, intercept calls, etc. once installed the phone becomes a surveillance tool even when the phone is switched off. The software does not require any active internet connection to work. Since you will be controlling the target phone, no sensitive data will be stored in any third party server. Only a one-time purchase price is involved in buying the software, no monthly rents, or yearly charges. Competitors have launched many Bluetooth spy software in the market. Beware of them.