Analyze any QMDL capture, no QXDM license needed

QMDL (Qualcomm Mobile Diagnostic Log) is a proprietary binary format used by Qualcomm chipsets to record modem diagnostic messages. It contains Layer3 messages (RRC, NAS, IMS), RF measurements (RSRP, RSRQ, SINR), radio events and QoS metrics. The file includes a header with capture metadata followed by variable-length diagnostic records. This format is used by Qualcomm tools such as QXDM, QCAT and professional drive test applications.

Converting QMDL to Excel allows network diagnostic data to be analyzed in an accessible tabular format. RF and telecom engineers can filter, sort and visualize radio KPIs, signaling messages and network events without needing a specialized tool like QXDM or QCAT. Excel also makes it easy to create reports and share data with non-technical teams. A typical 5-minute drive test capture produces 10,000 to 50,000 diagnostic records that become immediately searchable once exported to Excel.

The QMDL header contains essential metadata: format version, DIAG protocol version, capture start timestamp, Qualcomm chipset identifier, log mask (active message categories such as RRC, NAS, RF measurements), file size and record count. This information allows you to quickly identify the capture context without analyzing the entire file.

HiCellTek captures Qualcomm DIAG data directly on Android smartphones and exports in QMDL (compatible with QXDM/QCAT), Excel, CSV and encrypted HLOG formats. The app performs QMDL to Excel conversion directly on the device, without requiring a PC or QXDM license. Each record is decoded into structured columns: timestamp, message type, protocol layer, decoded payload and RF measurements. Advanced post-processing is available through the desktop companion app.

Yes. This online tool reads QMDL binary headers and previews diagnostic records without any Qualcomm software license. For full Layer3 decoding (RRC, NAS in XML) and complete Excel export of all records, HiCellTek Pro runs directly on Android and does not require QXDM, QCAT or a connected PC. The entire capture, decode and export workflow happens on the phone.

QMDL (Qualcomm Mobile Diagnostic Log) and DLF (Diagnostic Log File) are both Qualcomm binary formats, but they differ in structure and versioning. DLF is an older format used by QXDM 3.x and earlier, while QMDL v2 is the current standard. Both contain the same type of diagnostic data (Layer3 messages, RF measurements), but they use different record framing. This tool supports both .qmdl and .dlf files.

There is no theoretical limit, but a typical 30-minute drive test with all log masks enabled produces a QMDL file between 200 MB and 1 GB. Extended indoor walk tests or stationary captures with high logging rates can exceed 2 GB. This online tool handles files up to 300 MB in the browser. For larger files, HiCellTek Pro processes captures of any size directly on the Android device.

Yes. The analysis runs entirely in your browser using JavaScript. No QMDL data is uploaded to any server. The file is read locally using the File API, parsed in memory and the results are displayed on screen. When you close the tab, all data is discarded. For the CSV export feature, only your email address is sent to our EU-hosted backend to deliver the file.