How to Change The Resolution of a Picture on iPhone – 2 Efficient Methods You Should Know

December 22, 2023Ashley Mae

What are the image resolutions for the iPhones? Can you print the photos directly as 300DPI or share them with colleagues in detail? When you need to use the iPhone photos for business purposes, you need to know the details of the iPhone photo resolution.

When you need to change the resolution of a picture on your iPhone, you can go to Settings to choose the high-efficiency option. If you have already taken the photos, or need to increase the resolution, here is the ultimate solution to get an ultra-high-resolution for free online.

Change the Resolution of Images

Part 1. What are the Resolution of iPhone Photos

What is the maximum resolution of iPhone photos? Since the iPhone 6s, all iPhones are using 12-megapixel cameras, which means your photo contains 12 million pixels. It does not mean you get the same-year-old cameras with the latest iPhone 15. The changes may be invisible to the naked eye. The main wide-angle camera on the iPhone has upgraded from an f/1.8 aperture to an f/1.6 aperture that allows in more light for better low light performance along with some major software improvements that come into action because of the new A14 Bionic chipset.

But even if you have the best settings for the iPhone cameras, you cannot take 300DPI photos for printing directly. When you need to have the best resolution for iPhone photos, you can simply change the settings of the iPhone. But if you need high-resolution photos for printing or other business purposes, the professional iPhone photo resolution upscaler is the only choice.

Part 2. How to Change The Photo Resolution on iPhone via Settings

When you want to take a high-resolution iPhone photo, you can simply change the iPhone camera settings. Apple has introduced a new file format HEIC since iOS 11, which uses the advanced compression method. Just learn more about the best method to change the resolution of iPhone photos with the following process.

Step 1.
Go to the Settings app on your iPhone. As for iPhone with iOS 10.3 or higher, choose your name, go to iCloud, and then tap the Photos option. If your iPhone is still using iOS 10.2 or lower, tap on the iCloud and select the Photos option.
Step 2.
Turn on the iCloud Photo Library option and choose the Download and Keep Originals option. You should make sure that save all photos to the iPhone camera App and local access, otherwise, the resolution of stored photos would be reduced.
Download and Keep Originals
Step 3.
Back to the Settings app and scroll down to tap on the Camera option. Tap the Formats option and choose the High Efficiency option to save the photos as HEIC file format and change the iPhone photo resolution via the Settings app.

Note: iPhone offers you two options, Most Compatible and High Efficiency. With the Most Compatible option, the photos will be saved in JPEG format at the expense of the resolution of the saved photos. (See how to access photo in iCloud)

Part 3. How to Increase the Resolution of a Photo on iPhone

Just as mentioned above, even if you use the HEIC format, you cannot take high-resolution iPhone photos for printing directly. Aiseesoft Image Upscaler is a professional and all-featured AI-based image upscaler to increase the image resolution of the iPhone online in one click. It enables you to recover the lost pixels, colors, textures, and details of low-resolution iPhone photos to make a printable high-resolution iPhone photo.It also provides you with a desktop version called Aiseesoft AI photo editor that you can use on your Windows computer or Mac for ready use.

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How to increase the iPhone Photo Resolution

Step 1.
Transfer and save the pictures from your iPhone to your computer with the original USB cable. Click the Trust option or the Allow option in the pop-up window to allow your computer to access the iPhone, and then find the photos that need to be changed from the iPhone device folder and transfer them to the computer.
Step 2.
Go to the AI image upscaler and click the Upload Photo button, find the iPhone image you need to enhance from the pop-up window, and click Open to upload the image. You can also enlarge your image by selecting the Magnification option under the button. This online tool provides magnification from 2x to 8x.
Upload Photo
Step 3.
When the iPhone image is uploaded, it will change the iPhone photo resolution automatically. You can place the mouse over the image and see the sharp contrast between the two photos. Check the resolution of the original image and the output image before clicking the Save button to save the high-resolution iPhone photo.

If you prefer a fixed and handy photo editor tool on your iPhone, you can install the mobile version called Picwand for ready use. For Android users, you can also have Picwand installed on your smartphone.

Part 4. FAQs about How to Change Resolution of iPhone Pictures

1. Why the iPhone photos resolution in low without changing any settings?

The iPhone photos may be offloaded to iCloud without your knowledge. Go to the Settings app on your iPhone and make sure the iCloud Photo Library option is enabled. Once you have checked the iCloud Photo Library option, you can save the iPhone photo with high resolution.

2. Can I use WhatsApp to change the resolution of photos on my iPhone?

Instant Messenger Apps, such as WhatsApp can reduce the size of iPhone photos. The apps will automatically compress photos that are transmitted through them. You just need to use these apps to send your photos to yourself and then download them again.

3. What should I do if I want to use email to reduce the size of the photos?

You can change the resolution of photos on your iPhone via email, of course, and you just need to add your photos as attachments to your iPhone email, but note that when you add attachments, it asks if you choose to redefine the size of your photos. Download the changed photos from email to the camera film.


What are the best methods to change the photo resolution of the iPhone? You can change the resolution of iPhone photos from the Settings app on your iPhone. If you have already taken some photos with iPhone, or need to increase iPhone photo resolution for printing, Aiseesoft Image Upscaler is the desired online solution you can take into consideration.

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