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I have a SIM800L EVB GSM module connected to a Raspberry Pi and it is working correctly. However I did not find any pins related to speaker or audio output as shown in the wiring:

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This is different than the old model which has pins for speaker and audio:

enter image description here

What am I missing here?

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1 Answer 1

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You are not missing anything. The functionality exists on the SoC (SIM(00L)) but is not connected to any external pins on some of the models.

You need to buy a SIM800L module with audio connected from the SoC to external pins.

Ref.: Datasheet

These are the pins on the underside of the metal capsule (SIM800L SoC.)

enter image description here

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