Mobile performance observation sheet

JNS Digital Solutions

Updated: 2026-09-13

Companion guide: https://www.jnsdigitalsolutions.com/guides/mobile-website-speed-checklist

Repeat the test with comparable device and network conditions. Separate observed symptoms from suspected causes.

Page / device / browser / network / date: ____________________

Customer task tested: ____________________

When main content becomes readable: ____________________

Interaction delay observed: ____________________

Unexpected movement observed: ____________________

Lab tool and results (if used): ____________________

Field data available? yes / no / unknown

Observed issue versus suspected cause: ____________________

Developer investigation and chosen fix: ____________________

Comparable retest result: ____________________

[ ] Essential content and accessibility preserved

[ ] Form still works end to end

Next review trigger: ____________________

Free to use and adapt for your business. No email or review is required.

Planning aid only. No guarantee of rankings, traffic or legal compliance. Keep credentials and private customer information out of this worksheet.