What! SIM908 has lagged behind upgraded version of SIM808
Are you still looking for SIM908 which has already stopped to produce for most regions and countries ? Nowadays it comes to the recognition and popularity that SIM808 overmatches SIM908 in its cost effect、more functions and inexpensive price. Why? You can find answers below. SIM808 VS SIM908 COMMON POINTS TO SHARE
  1. The GSM/GPRS engine is a quad-band GSM/GPRS module that works on frequencies GSM 850MHz, EGSM 900MHz, DCS 1800MHz and PCS 1900MHz.
  2. SIM808 and SIM908 features GPRS multi-slot and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.
  3. Both GPS solution offers best-in-class acquisition and tracing sensitivity, Time-To-First-Fix (TTFF) and accuracy.
  4. They communicate with other MCU by serial port.
  5. SIM808 and SIM908 are designed with power saving technique so that the current consumption is as low as 1.2mA in sleep mode (with GPS engine powered down).
  6. They integrate TCP/IP protocol and extend TCP/IP AT commands which are very useful for data transfer applications.
PARAMETERS COMPARISONS: Here allow me to tell their varieties by two listed tables which would be helpful to see fairly. (1)Differences in general features、specification for GPS、specifications for GPRS data and certifications. Differences in general features、specification for GPS、specifications for GPRS data and certifications.                                                  （click picture to see clearly） (2)Differences in interfaces and Something unique respectivelyDifferences in interfaces and Something unique respectively                                                      (click picture to see clearly) WHY CHOOSE SIM808 NOT SIM908 Since we are already familiar with interfacing the SIM908 module and have played around with the AT commands, the question that comes to our minds must be that “Why choose SIM808 not SIM908” which could be answered by following points.
  1. SIM808 shares more powerful functions than SIM908, especially the function of Bluetoothwhich could be more helpful in your applications.
  2. SIM808 is designed as smaller in size, being more free and broader to use for most yields and projects with high cost effectiveness.
  3. SIM808 owns fancy and attractive price at factory price of around 20RMB lower than SIM908, which saves much cost, appealing to most distributors.
  4. SIM808 is easier than SIM908 to design the computer programming, reducing the cost of technology and manpower too.
  5. SIM808 enjoys low power consumption for its special design.
  6. SIM908 has already been stopped production for most regions and countries, meaning that more and more distributors are choosing SIM808.
I guess you have already had your answer now , allow me to share several SIM808 modules related open source products for your projects or design references: 1. Crowtail- SIM808  2. SIM808 GPRS/GSM+GPS Shield  3. Elecrow SIMduino UNO+SIM808 GPRS/GSM Board