** The app requires connectivity to the YFit pro smartwatch ** Main functions: ** After binding SN90 and other watches, you can make/receive calls, receive SMS messages, missed calls and other functions **** notification bar message reminder (phone calls, SMS, APP messages, etc.), you will not miss important events ** ** Enable phone alert and SMS alert function, will request permission ** Other features: - Record activity data in real time and summarize weekly and monthly dyna