Software update

If you have an iPhone 12 or newer and access to 5G, you can update your iPhone with Mobile Data.

To be able to download iOS updates via 5G, go to:

Settings → Cellular → Cellular Data Options → Data Mode → select Allow More Data on 5G

You can download and install software updates here:

Settings → General → Software Update

If you have an older iPhone or you don't have 5G in your data plan, you need to connect your iPhone to Wi-Fi to download iOS updates. Alternatively, you must update from a computer. See link at the bottom of this answer.

You can find more useful information here:

Update your iPhone or iPad - Apple Support

If you want to update your iPhone via a PC or Mac, see here:

• Mac: Update your iPhone, iPad, or iPod touch with the Finder - Apple Support

• PC (iTunes): Update your iPhone, iPad, or iPod touch with iTunes - Apple Support

On iPhone 12 or newer, go to Settings > Cellular > Cellular Data Options > Data Mode, and make sure Allow More Data on 5G is turned on. Then, update your phone like normal in Software Update, and you'll be asked if you'd like to use data.

iPhone 11 and older can't update over LTE.

palash227 Said:

"Software update: How can Update the software using mobile data?"

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What's the model of your iPhone?

Visit my User Tip: Use an iPhone 12 or later, that is using 5G, in order to update over Cellular - User Tip