There is no one definitive answer to this question. It depends on the software you are using and the printer you are printing to. In general, though, you want to make sure that your image resolution is set to at least 600 pixels per inch (ppi).
To find the DPI of a photo on your iPhone, open the photo in the Photos app and tap “Share” in the bottom-left corner. Tap “Copy” and then paste the photo into a text editor (like Notes) to see its dimensions.
The iPhone camera has a DPI of 326.
600 DPI is approximately equal to 2400 pixels.
There are a few ways to change your mobile DPI. One way is to root your device and use a custom ROM that has a DPI changer built in. Another way is to use an app like Xposed Framework and install the DPI Changer module. Finally, you can use an app like Ultimate Rotation Control to change the DPI on the fly.
Yes, the iPhone 6 can take 300dpi photos. However, the resolution of the photos will be lower if you’re not using an iPhone 6 Plus.
iPhone photos are typically around 3264×2448 pixels.
