1.micro SIM are supported. Verizon and Sprint (CDMA SIM) are not supported.
2.This watch works likes a 2G mobile phone. Please make sure the SIM card you buy works on 2G devices.
3.This watch only supports GSM SIM with 2G GPRS date. 3G UMTS/HSPA+/4G LTE networks are not supported.
If necessary, check with the carrier if GSM 850/1900 MHz is supported. features
• APP system requirements: Android 4.0 system or more, IOS 8.0 or above
• Touch Screen: 1.44″ TFT Touch Screen
• Touch Screen: Capacitive Touch Screen
• SIM card: supported, 2G SIM card,850/900/1800/1900
• Small flashlight for viewing in dark places
• SOS button for emergencies
• Built-in camera
• Learning games for kids to play
• Remote monitoring for keeping a safe watch on your children
• Built-in microphone for two-way communication
• Battery: environmentally friendly 400 mA polymer battery
• LBS positioning
• Parents can customize a security range that alerts when the watch is moved beyond that location
• Enable/disable functions according to time
• Trace replay can track movement for up to 30 days
• Strangers cannot call the watch
• Alarm clock reminders
• Friends function allows pairing and voice chat with friends
• Low power warning
• Remote power off Package included: