Here are my tips for saving some data and time while using digital devices:
Brave Browser
Changing your browser is the easiest thing you can do, especially for something like brave, even duckduckgo promotes it
Watch less videos
Every second of an online video usually have 30 frames, that's a lot of data to transmit!
Trisquel Mini
This is very fast operating system, it only requires 128 MB of RAM, You can try it without installation!
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From @jedz0ka