The MIUI browser on the Xiaomi Mi4 is slow and lags. Sometimes, it may not even open up. Follow the steps to resolve the issue:
Ensure that the browser is fully updated. If it still crashes or is very slow, then clean the cache files of the browser. To do this,
- Go to Settings – > Apps – > MIUI browser – > clear cache
If the issue persists, install another browser like Opera Mini or Google Chrome and use it instead of the MIUI browser.