Adapting to the Mobile Web F̶u̶t̶u̶r̶e̶ Present
summary
Claim: many web apps ship an order of magnitude too much JavaScript and fail on real phones, so require 3 seconds on 3G on a $200 device for first-interaction and under 1s on repeat visits. Tools: Chrome Inspect, DevTools tracing, WebPageTest, Lighthouse. Data: DoubleClick finds 53% abandon over 3s, average mobile page 19s, desktop-to-phone benchmarks show ~25× slower and thermal throttling can change performance ~15% (ice‑pack test). Fix: use PRPL pattern + Service Worker, chunked bundles and on‑demand loading (Shop App hits ~3.5s on 3G with 1.3s total JS).
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