If you are a developer without a license, consider using (limited), or bugreport → modem-log (Android dumpstate includes some modem logs in encrypted .qmdl ).
QXDM captures data via the diag interface. The output is typically saved as an file, though it is often converted to QMDL or text-based CSV/HTML for external analysis. qxdm log
Note: Access to QXDM and proprietary packet documentation requires a Qualcomm CreatePoint account and appropriate licensing. If you are a developer without a license,
| Extension | Description | |-----------|-------------| | .isf | – most common; binary, can be encrypted. | | .dlf | Data Log File – older format. | | .qmdl | Qualcomm Modem Data Log – compressed ISF. | | .dmb | Binary log from device. | | .txt / .csv | Exported after decoding with QCAT. | Note: Access to QXDM and proprietary packet documentation