am facing a very weird issue with a SIM800L GSM module. I am working on a project that involves connecting the SIM800L module to the NodeMCU, all of this is powered by a 3.7 V battery. Problem: I have a SIM800L and I have a SIM card from a carrier that works fine in the module. I then got a new SIM…

Abnormal behaviour with the SIM800L GSM module

xfpd February 23, 2024, 9:47pm 2

Do you need to top-up minutes with the carrier?

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