mms apn locked iOS 8.03

Hey marcogp,

Thanks for the question. If I understand correctly, you are not able to change the APN on the iPhone. I would recommend that you read this article, it may be able to help the issue.

iOS: About cellular data network settings (viewing or editing the APN) - Apple Support

Don't edit the APN unless directed by your carrier or IT manager. Contact your carrierto verify the correct APN settings.

Depending on your carrier, you may not be able to edit the cellular data settings.

If you're using iPhone or iPad in an enterprise environment, your IT manager may have set up a special APN for you to use. If this is the case, contact your IT manager to change your APN.

Thanks for using Apple Support Communities.

Have a good one,

Mario