Usually, you don’t have to touch the APN parameters because they are configured for you automatically.
Sometimes, however, you may want to visit the APN configs screen on your unit.
confirm you write down the APN options before you make any changes, just in case.
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If you enter nonfunctioning APN parameters, you might lose the cellular and data connectivity on your phone.
You may also incur additional charges.
The options save automatically.
Depending on your cellular provider, you may not be able to change the APN options.
The site was developed so that you could use unofficial SIM cards from other carriers on your Apple gear.
Resetting all controls on the iPhone means you’ll have to re-type your information and data.
Updating the iOS version of your rig may also return the APN to the original configs.
Android APN prefs
Now that unlocked smartphones are available, owners can move between carriers.
When they do, a new APN must be used to identify the carrier.
Unlocked Android smartphones have APN tweaks, but their location varies by the phone manufacturer.
Different APNs may represent differently priced plans with your carrier.
You may end up with a higher-than-expected bill or a smartphone that won’t make calls at all.
