Ability to change an iPhone APN?

smokiepup

    I am a current user of the Nielson Mobile Panel.  I've been having trouble getting the nielson cell profile to successfully install on my iPhone 6 Plus.  I was able to install the wifi profile without a problem.  I read online that T-Mobile users may have to switch their APN to internet2.voicestream.com.  Does anyone else have this problem? If not, can I change my APN and if so how?

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