I joined 2 months ago and have still not been able to add the remaining lines from my previous family plan. The story keeps changing depending on who I ask. Some say it's just a credit check issue (my score is 820+), while others say I have to be a customer in good standing (I've been with Comcast for 2 years), and others say it's a 3-month waiting period. I also would not have joined Xfinity Mobile if I'd known this up front. I don't plan to carry two phone plans indefinitely so if they are unable to resolve in the next month, I'm planning to cancel my service and also file a complaint with BBB for false advertising.
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