How to find APN settings on iPhone (and why they may be missing)

An APN, or Access Point Name, tells your iPhone how to connect to your carrier's data network. Most iPhones get the right APN automatically, so you never see it. You only need to look at it when mobile data, picture messages or your hotspot stop working after you switch carriers, use a new SIM or travel. Here is how to find it, and what to do when it is missing.

Why you may not see APN settings

This is the most common reason people search for this. The Cellular Data Network menu is not on every iPhone. Many carriers send the APN settings to your iPhone in a carrier settings file, and they hide the menu so you cannot change it by mistake. Whether it shows depends on your carrier, your plan, and the SIM type. A prepaid or travel eSIM may show it, and a major carrier plan often does not. If the menu is missing, it is normal and not a fault.

What the APN fields mean

• Cellular Data: the APN, username and password your iPhone uses for mobile internet.
• LTE Setup: an optional APN for LTE on some plans.
• MMS: the APN plus the MMSC and related fields used for picture messages.
• Personal Hotspot: the APN used when other devices share your iPhone's data.

Do not copy APN values from a random website

Pages that list APN values for every carrier are often out of date or copied from each other. A wrong APN can stop your data completely. Get the values from your carrier's support page or by calling them. If you do enter them, type each field exactly, tap Done and restart the iPhone.

Data or picture messages not working? Try these first

For no signal at all, see an iPhone with no service. If your hotspot is the problem, read a hotspot that is not working.

Switched carriers or bought a used iPhone?

A carrier locked iPhone only works properly on its own carrier, and a wrong or missing APN is a common sign that something is off with a new SIM. Before you change settings, check that your iPhone works on the new network. Our guide to checking carrier compatibility shows how.

Where APN settings are, by iOS version

In recent versions of iOS the path is Settings › Cellular (called Mobile Service or Mobile Data in some regions) › Cellular Data Network. On older versions it sits under Cellular › Cellular Data Options. With two lines, pick the line you want first. If the Cellular Data Network option is missing, your carrier does not allow manual changes on that plan, which is common for the big US carriers and for eSIM lines. The menu names can differ by version, so use the search box in Settings and type APN if you cannot find it.

APN, carrier settings and configuration profiles are not the same

Three things get confused. The APN is the name your iPhone uses to reach your carrier's data network. Carrier settings are a small file from your carrier that the iPhone updates by itself, and it holds the correct APN for most plans. A configuration profile is something you or an organization installs, and it can set the APN too. You can see installed profiles under Settings › General › VPN & Device Management. Only install a profile from your carrier's official site or app, never from an unknown page.

How to reset APN settings

If data or picture messages stopped after a change, reset what you changed. On some versions the Cellular Data Network screen has a Reset Settings button at the bottom, which returns the APN to the carrier default. If it is not there, go to Settings › General › Transfer or Reset iPhone › Reset › Reset Network Settings. This also forgets saved Wi-Fi networks and passwords, so save those first. Then restart the iPhone and check that Cellular Data is on.

Using a prepaid or MVNO plan

Prepaid brands that run on a bigger network sometimes need their own APN. Get the exact values from that brand's official support page, enter them in the Cellular Data Network fields, restart, and test mobile data and a picture message. If the iPhone still has no data, make sure the phone is unlocked for that network, as covered in checking carrier compatibility. A locked iPhone often looks like an APN problem when it is really a lock.