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Your phone will not generate images with a pixel density of 72ppi... it will generate images with x/y pixel dimensions. What that means in terms of pixels per inch depends on how large it is printed/displayed. E.g. if you use a phone with a 12MP sensor that generates an image of 4000 pixels wide, and you printed that image at 4" wide, it would have a pixel ...


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Usually, it is recommended to print photos at 300dpi (= dots per inch, which is the print equivalent to ppi, as printer cannot print pixels but dots). However, if you simply set the pixel density to 300dpi, it might not change anything if the original photo isn't large enough. You can determine the maximum print size at 300dpi from the photo's dimensions. ...


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