US compatibility Nationwide on all GSM Networks including AT&T, T-Mobile,Cricket, Straight Talk and more....... Hotspot,WiFi, GPS, GPRS,EDGE,MP3/MP4,....
RedTagCanada SIM900 Quad Band GSM GPRS Quad-Band Modules 2G Shield Development Board for R3 Mega with Antenna for Arduino SCM & DIY Kits
... - could work on GSM networks in all countries around the world, work with Uno Mega..
This is a new version (64M version), SMS support MMS: Multimedia message and Short Message Service - so it is possible to send small amounts of data over the network (ASCII or raw hexadecimal).
The shield allows you to get SMS, MMS, GPRS and audio via UART by sending AT commands (GSM 07.07, 07.05 and SIMCOM enhanced to commands). The shield also has the 12 GPIOs, 2 PWMs and an ADC of the SIM900 module (They are all 2V8 logic) present on board..
Application: M2M (Machine 2 Machine) Applications.Remote control of appliances.Remote Weather Station or Wireless Sensor Network.Vehicle tracking system with a GPS module.Good to learn GSM / GPRS mobile phone development, control development of remote equipment, wireless meter reading, smart appliances, ultra long distance control, etc..
Control via AT commands - Standard Commands: GSM 07.07 & 07.05 | Enhanced.
Power jack - connected to external 4.8~5VDC power supply, Antenna interface - connected to external antenna, Serial port select - select either software serial port or hardware serial port to be connected to GPRS Shield.
This device is Carrier-unlocked and may be used with any GSM carrier that uses a frequency or band that this device supports. A SIM card and service....
ICP DAS GTM-201P-3GWA Industrial Tri-Band 3G/GSM/GPRS WCDMA Cellular Modem with GPS Function
Applications:Remote Data Monitoring and Control, Water, gas and oil flow metering and schedule, Power station monitoring and control, Oil field, weather forecast, environmental protection, street lamp monitoring and control, Fleet management, Vending Machine, etc..
Industrial design, making it a reliable cellular solution for data collection and transmission.
Reliable GSM/GPRS/EDGE/UMTS/HSPA network connectivity, providing fast and cost-effective long-range wireless applications.
Microsoft Lumia 640 XL 8GB Quad-Core Windows 8.1 Single Sim Smartphone (GSM Unlocked) - Black
Microsoft 640 XL is a Workforce Powerhouse at an affordable price it is GSM unlocked to work with any GSM network worldwide.
Storage: 8 GB ROM, 1 GB RAM microSD Card slot: up to 256 GB (dedicated slot) Reased: April 2015, (being that this is GSM unlocked you will need to contact your network provider to acquire a SIM card as there is no SIM card enclosed).
DISPLAY: Type IPS LCD capacitive touchscreen, 16M colors, Size: 5.7 inches (~69.1% screen-to-body ratio) Resolution: 720 x 1280 pixels (~259 ppi pixel density) Multitouch Yes Protection Corning Gorilla Glass 3 - Clear Black display PLATFORM: OS Microsoft Windows Phone 8.1, upgradable to Microsoft Windows 10 Chipset: Qualcomm MSM8226 Snapdragon 400 CPU: Quad-core 1.2 GHz Cortex-A7 GPU: Adreno 305.
Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, and select prepaid carriers) Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.