Kids Smart Watch Phone is best gift for your children??blue/pink/yellow three optional?? favorable color for girls boys.comfortable feeling with good quality food grade silicon wristband.Safe and Smart!</br>Attractive features:3g micro sim supported??1.54inch with 240*240 resolution colorful screen??2.5D smooth quality touch panel?? Rotating camera(2MP)?? two-way calls?? multiple positioning(GPS+WIFI+AGPS+LBS)?? electronic fence?? a key SOS?? curriculum?? voice chat?? multiple alarm clock(Analog clock face/12hour/24hour system optional???? remote monitoring.</br>Multi-Features: watch with SIM card to support parents and children two-way calls??GPS Tracker Location with App(supported for Android&iOS Smartphones)+Achieve all day real-time location tracing ??check the position at a"itness Tracker for child: Pedometer??Voice Chat on app??Alarm Warning of taken off etc.</br>Cellular Band :GSM 850/900/1800/1900MHz+WCDMA 850/1900MHz. Support MicroSIM only?? the size is 12*15 mm??do not compatible with SIM and Nano SIM ??support 2G and 3G??we recommend AT&T sim.( NOT support for Verizon??Sprint CDMA sim). the watch support GSM sim with 2G GPRS date and support SIM with 3G??if you must buy some newest version 4G LTE sim??please check with Carrier if supported with GSM850/900/1800/1900Mhz and WCDMA 850/1900MHz network service firstly before you placed order. If the watch fails to connect to the server and display disconnection on APP when turned on for the first time. Please confirm: (1)The sim card is properly installed and screen display is normal; (2)The sim card is WCDMA sim?? please note WCDMA sim card is only supported??3 G AT&T card??;  (3)The sim card has activated 3G data traffic and have sufficient credit; (4)Send SMS message "#" from cell phone to watch. Then the watch will reply its parameters in returned SMS. Make sure the watch is turned on with SIM card installed and the SMS message was edited under English input method.</br>Prepare a Prepaid card and activate data flow?? GPRS and caller display function. it's very new product?? for some sim card must set up APN for network then you can access the APP successfully for tracking?? once you got watch please follow introduction??if meet any questio