You are correct. A Multi-Share Line Group is not required. The reps don't really understand the "wearable" devices and how to support them very well.
In fact you can add up to 2 of the AT&T Unlimited Wearable $10 plans to a single line AT&T Unlimited Choice℠, AT&T Unlimited Plus℠, AT&T Unlimited Choice℠ for Business, or AT&T Unlimited Plus℠ for Business plan (“Your Single Line Unlimited Plan”) by calling 800-331-0500. Note: These are the current plan names but the same $10 plan can be added to other qualified Unlimited Plans.
For example you can also do this with the iPhone with Grandfathered Unlimited Data. As you mentioned in an earlier post, you have to evaluate what plan best meets your individual need(s).
Dave
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Bingo that's a problem, the 10 device is a hard limit. Maybe this is what caused your errors your posted previously.
Dave
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Again this is just not a requirement. The reps don't understand the "wearable" plans and think you have to move to a Muli-Share Line Group since the wearable plan is an "Unlimited plan and since you already have a plan, they think 2 lines always equals a need for a Multi-Share Group because that's how it works or multiple Smartphones.
Just keep asking if they know how to correctly add a $10 AT&T Unlimited Wearable plan.
Dave