python-gammu - how do I encode/decode an SMS which contains emoji?

Hi,

I'm unable to successfully encode/decode an SMS containing emoji.

Using Python 3 and the Python-Gammu library, I encode a PDU for message 
text containing an emoji character 😂  (Unicode character U+1F602 - 
"FACE WITH TEARS OF JOY"):

The PDU returned is "07918188558588f811000b912121551532f40018ff02f602".

When I then decode this PDU using the Python-Gammu library, the message 
text contains an unrecognised character  (\xEF\x98\x82), rather than 
the Unicode emoji character.

*** I get the same result using Wammu's own encoder and decoder tools at 
https://wammu.eu/tools/pdu-encode/  and 
https://wammu.eu/tools/pdu-decode/ . ***

I wonder whether this is something to do with the gammu library working 
strictly to the GSM specification and interpreting the UDH payload as 
UCS-2 encoded rather than as UTF-16. Nevertheless, emoji are now in 
common use within SMS messages, and I need to find a way of converting 
gammu's literal decoding back to the original emoji as entered by the 
sending party.

Would anyone please be able to guide me on how to achieve this?

Thanks, David.


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