ModemManager currently encodes the USSD command *141*0# (for MTN South Africa) as "AA182DA6828D00". While this works on some modems, for example the E1820, other modems, for example the E160, require USSD commands that are a multiple of 7 characters long to be padded with 0x0d. Huawei Mobile Partner dashboard software for Windows encodes *141*0# as "AA182DA6828D1A" which works on both the E1820 and the E160. The attached patch pads the USSD command with 0x0d before encoding if it is a multiple of 7 characters long.
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