Logo tests for CDMA devices those support SMS SevenBitAscii encoding send the UTF-8 encoded unpacked data to the driver and expects the driver to do the encoding to 7BitASCII. On the receive also, the tests expects the driver to give the unpacked data up to the OS. For Unicode encoding also, the data is data is sent in UTF-8 encoding.
A failure similar to below can be seen if the driver does not comply with this expectation:
SMS received is not that sent:- Sent: 443935425600915599 : length 18 - Received: 4439354256009155 : length 16