After talking to @elkanam seems the bug is that AT+CCHO doesn’t work with "
Verified:
AT+CCHO=A0000005591010FFFFFFFF8900000200
+CCHO: 0000000078d70f5f
OK
AT+CGLA=78d70f5f,10,"81CA005A00"
+CGLA: 40,"5A10890440451167274948000000086327129000"
OK
This is clearly a bug (supported on EM7590, MC7455 and Quectel EC25 as far as my testing goes) I would at least update the documentation about this.