Problem of reading a pdf book on mobile screen

@Gurmukh_Singh_Parmar hmmm, so a new bigger phone is out of the question? You could try 'Liquid Mode.' This is by far the most powerful feature in Adobe Acrobat Reader for mobile. When you open a PDF, look for the "Liquid Mode" icon (it often looks like three cascading waves or lines). Tapping this will reflow the PDF content, stripping away the fixed layout and presenting it in a more responsive, scrollable format, similar to how a webpage or e-book looks. This eliminates the need for constant zooming and panning. In older versions or if Liquid Mode isn't available for a specific PDF, you might find a "Reflow View" option under the "View" settings. This does a similar job of reorganizing text for easier reading. Experiment with both portrait and landscape orientations. For some PDFs, landscape might allow for slightly larger text with less horizontal scrolling, while for others, portrait might be better for continuous vertical reading.