A:AnswerI bought this printer specifically to use wifi and print from my iphone. You may need the app to link your devices, I could not find the hp app for my kindle fire.
A:AnswerI do not have it set up for fax. It prints, copies, scans. Was incredibly difficult to set up. Slow to scan. My other HP printer (sorry I did not invest the money for that one) scanned without having to change the setting to scan.
A:AnswerYes, you can print PDF documents and photos from the HP Smart app. I would recommend looking at the "Step 2: Print or scan documents and photos" section of this webpage: https://support.hp.com/us-en/product/hp-deskjet-2600-all-in-one-printer-series/12319824/model/21481524/document/c04675142 If you need further assistance, visit https://support.hp.com