Old websites may continue to cache on Netlify even after updates due to several reasons.
The most common are:
CDN Caching: Netlify uses a Content Delivery Network (CDN) to distribute content globally. If the CDN has cached the old version, it will continue to serve that version until the cache expires.
Browser Cache: Browsers may have their own caching mechanisms independent of the server. If the browser has cached resources, it may continue to use them until they expire.
Your users don’t have to manually do what you did by restarting their phones. Browser or CDN’s caches are usually invalidated automatically.
In order to learn more about how Netlify’s CDN handle cache, kindly check the support guide below.