My Buddy GPS Provide unlimited range using GSM technology and provides alert whenever someone forcefully change SIM. it can be tracked with changed SIM too. Track real time and track history via App, SMS or online. Monitor silently to ensure safety of your kids, women & family . you can hear conversation around device without disturbing. Create unlimited fences like School, Tutor, parks, Office etc and get unlimited notification of entering or leaving these locations. Get notifications at app, SMS on phone.