Old device that I use for some older games and as spare. Device is Huawei IDEOS U8150 running CyanogenMod 7
Modern web used to work on it and quite smoothly too if you set your user agent to Symbian (in Via settings). But I tried this year and unfortunately most websites now will give SSL errors, or just got way too heavy for the less than 256MB of RAM available and will crash the device. Also, Google Play Services will take the entire space available (not in 2023, Google dropped support completely to even logging in).
But Google Maps, the latest version of the app for the OS being from 2014, still works with no data missing and all updated (but navigation, used to be a separate app, doesn’t and now doesn’t even connect to display the “update the app” message). I downloaded the map of my city and nearby on it, and used it to go to the repair shop twice to fix my real device like a non-digital map.