ModemManager 1.14.0: Can't send sms with some chars

[Stanke, Scott]

Hi Aleksander,

Thank you for the prompt response found at the following link:

https://lists.freedesktop.org/archives/modemmanager-devel/2022-June/009281.html

Sorry for my delayed response. Your response did not make it to my email inbox. A colleague pointed me to the above link.

I will review your response with Digi International Sr Product Manager.

The test results in my email are from troubleshooting a potential issue when sending SMS from the Digi Cellular Router shell:

Sending SMS via “modem [sms|sms-text] <number> <message>” results in error when message contains Chinese characters:
# modem sms-text 16511234567 world范例
error: couldn't send the SMS: 'GDBus.Error:org.freedesktop.ModemManager1.Error.Core.InvalidArgs: Cannot prepare SMS to be sent: Cannot generate PDUs: Error processing input text'
successfully deleted SMS from modem

Sending SMS via “modem sms-binary <number> <message>” will send the SMS message with Chinese characters, but some phones receive the SMS text as empty or <content not supported>:
# modem sms-binary 16511234567 world范例
successfully sent the SMS
successfully deleted SMS from modem

Do you know if the above “modem sms-text” and “modem sms-binary” results are expected, or if our ModemManager implementation may require a fix to support sending SMS message containing Chinese characters?

Thank you.

-Scott

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