If you actually want to spy on someone, onespy is the worst option. It didn't work at all and the functionality and installation process were too difficult. The worst thing about this software is its customer support system. They don't even listen to your problem. After this worst experience, my friend suggested me Xnspy as a multi featured app and now I have been using it for like 6 weeks. Its user friendly environment makes it one of the best spy apps. It updates data so efficiently that I don't have to wait for so long. It offers more than 30 advanced features for Android devices. Go for Xnspy if you actually want to spy on a phone.