Please follow the below steps:
1. Try a different data network or Wi-Fi and try again. Make sure you run the browser in a stable network environment.
2. Clear all background applications to ensure that the phone has enough running memory.
3. Restart the phone and then open the browser to ensure that there is enough memory.
4. Open app settings to clear the browser's cached data and then open the browser (data will be lost after the browser clears the cache, so back up data before clearing).
If the issue persists, contact the Nothing Support Team for further assistance.