Well, what seemed simple wasn't. My first activation didn't work and then it somehow got added to my other MiFi 10GB Mobile Share plan. After calling, they moved the original MiFi to my Unlimited Plus plan (with all of our phones) and left the Mobley on the 10GB Mobile Share data plan. This resulted in us getting 2GB of overage charges. At least AT&T waived those when they realized their mistake. I had to call yet again, and this time they added the Mobley to my existing Unlimited Plus plan... meaning I now have 2 MiFi devices on the same unlimited plan as my phones.
At least it works... and seems correct.
