Opera Mini

If you have an older device or that doesn’t have powerful hardware, you might want to give Opera Mini a chance. It’s designed to work with small amounts of RAM memory so that it could be just the thing you need.
 
Opera Mini comes with an ad blocker, a feature that lets users download videos for offline use, and the option to place shortcuts on the home screen for specific websites.
 
Also, the application supports multiple tabs, incognito browsing, and a smart download feature which lets users start a download and continue it when the phone is finally connected to a Wi-fi.
 
Opera Mini provides users with a night mode, the ability to sync data across devices, change the default search engine, and save pages so you can read them while you’re offline.