How to Change APN on an iPhone
In most cases, you won't need to manually change your Access Point Name settings on your iPhone 5. The iPhone automatically downloads the information required to access your cellular network. Sometimes, your cellular provider may request that you manually enter in a new APN for troubleshooting purposes. Not all carriers provide the option to manually edit your APN settings. According to Apple, you may incur additional charges and lose network connectivity if you use the wrong APN settings.
Tap the "Settings" app.
Choose the "Cellular" option.
Select the "Cellular Data Network" option. If your carrier doesn't provide the option to change your APN settings, this section won't display.
Tap "APN" in the Cellular Data section.
Input the new APN address supplied by your provider as well as your username and password in the relevant fields. The information automatically saves as you input it into the available fields.
Tips & Warnings
- Changing the APN to a nonsense variable can prevent the possibility of incurring charges when mobile apps attempt to update in the background or while roaming. However, the better option involves turning on Airplane mode or disabling cellular data in the Settings app under the Cellular option to prevent incurring charges.
- You can reset the APN settings to the default setting to automatically apply your carrier's default APN. Select the "General" option, "Reset" and "Reset Network Settings." Enter your passcode, if you receive a prompt, and select "Reset Network Settings" again.
- Check with your carrier before making changes that can affect your network access.