Follow along with the video below to see how to install our site as a web app on your home screen.
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Normal
Yeah, if it's on a charger (or connected to a PC via USB) you will get stupid errors like that, along with "you don't have an SD card required for download" or something similar when downloading stuff via the browser. If you want to access stuff on the card while charging, just disable the "use USB storage" option. That will clear it all up. Otherwise, just unplug the phone when you want to do that stuff.