Troubleshooting the "Invalid PPI" Error on Samsung Devices Seeing an "Invalid PPI" error on your Samsung device can be alarming, especially when it leaves your phone stuck in or a boot loop. This error is relatively rare and often points toward deep-seated software or partition issues rather than a simple glitch.
In recent Android versions, Samsung introduced a "Font weight" adjustment (making text bolder or thinner). This adjustment subtly alters the way TextView measures canvas size. In specific scenarios involving WebView (apps that show embedded web pages) and custom fonts, the system fails to cast the PPI float value correctly, defaulting to NaN (Not a Number). The app sees NaN and screams "Invalid." invalid ppi samsung
He laughed nervously. PPI? Pixels per inch? How could pixels be invalid ? Troubleshooting the "Invalid PPI" Error on Samsung Devices