4G, 3G, 2G GSM shields frequent ask question (FAQ) section

4G, 3G, 2G GSM shields FAQ table of content


SIM related FAQs

SIM card for 4G, 3G, 2G GSM shields

SIM card PIN CODE removal how to. demo code require SIM without PIN code verification. My SIM card require PIN code check....

SIM card sizes and types. What SIM card type to use with shields.

Breakable SIM read failure. Fit breakable SIMs [2FF, 3FF and 4FF in one SIM] with modular modems [c-uGSM, h-nanoGSM, d-u3G and l-LTE] - workaround.



Serial [UART] related FAQs

UART signals for 4G, 3G, 2G GSM shields

shields UART fail to communicate with.... What to double check in order to have proper UART connectivity....



And many more, available soon...







Do you have simple workarounds or howto that applies to a-gsm, a-gsmII, b-gsmgnss, c-uGSM, h-nanoGSM, d-u3G or l-LTE shields?
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document version 1.00 / 2018-02-08 © R&D Software Solutions srl