I've an Arduino Uno and GSM Shield connected. Example programme GSM_Tools/TestModem is working fine. However, the example programme GSM_Tools/GSMScanNetwork is not working.
- Is the band selection critical? I've check the link, http://www.worldtimezone.com/gsm.html, and found out the band for Singapore where I resided.
Singapore 900 1800 3G 2100
Do I need to change the band to: E-GSM(900)+DCS(1800)?
- How about the 3G 2100? Can the GSM Shield work with 3G network?