Want to do your darts buy cba blowing up your hand/arm muscles? I managed to find a solution!
This guide is meant for iOS users. (probably works on Android or other platforms, I just don't know how to do it.)
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First, let's go to Settings > Accessibility > Zoom, then turn on Zoom. Now the Zoom setting is turned on!
To control how much Zoom you get, Double-tap the screen with three fingers (without lifting your fingers after the second tap), then drag up or down. Or triple-tap with three fingers, then drag the Zoom Level slider.
To move around the screen, you need to "drag" to the position you want using three fingers on the screen.
If you want to restore to your normal resolution, just simply Double-tap the screen with three fingers or use Accessibility Shortcut to turn off Zoom.
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Setup your inventory like this, with the zoom focusing the inventory. And just tap with your thumbs until you get in motion to do the darts without failing any.
You can also do it slower, still gets the job done.
Enjoy the gains!