MOBILE SERVICE COMPARISON RECORD
Companion: https://yenra.com/multigenerational-wireless-test-system/
Prepared September 8, 2026. Editable field-test record.

Use permitted workloads, authorized accounts and consenting recipients.
Test stationary or as a passenger. Never call emergency services to test.
Check data allowances and record privacy-appropriate evidence.
This simplified worksheet is not a standards-conformance test suite.

Objective (whole service comparison or isolated variable):
Device/OS/SIM/provider/plan/network mode:
Wi-Fi Calling/VPN and path-changing settings:
Location/time zone/date/conditions:
Endpoint/recipient/tool/version/payload and units:
Start event/completion event/timeout/observation period:
Clock source and synchronization method if needed:
Repeat count, sequence and variables held constant:

ONE ROW PER ATTEMPT:
Reference / start / completion / elapsed ms or s / on-time-late-unconfirmed
/ error / observed network state / evidence / notes.
Tasks as applicable: voice setup and agreed duration; identified message;
web task; verified file transfer; supported recovery after service loss.

Summary:
Total attempts / completed within deadline / late / unconfirmed / errors:
On-time percentage = on-time count / all defined attempts * 100.
Delay subset definition, count, minimum, median, maximum:
Any percentile calculation method:
Subjective call notes separate from instrument scores:
For objective scores: algorithm/version, codec and measurement setup:
Observations / hypotheses / next discriminating test:

Fictional example: 20 attempts, 18 within 30 s, one at 45 s and one
unconfirmed during observation -> 90% on time, one late, one unconfirmed.
Do not discard failures or describe a small pilot as population-wide proof.
ITU methodology references and interpretation limits are in the guide.