Repeating what others have said...BYOD is the deal breaker for me.  Think about it, Xfinity...the phone buying model has changed. Free or discounted top phones with a contract to a wireless carrier are a thing of the past.  Your iPhone 4 or 5 dies, you have to buy a new one.  Period.  So here I am with two phones which are less than two years old with device payments for several more months.  I would love to switch to xfinity mobile, but I cannot afford to ditch relatively new phones which are not even paid off!  I would happily pay for an xfinity sim card (assuming it is a reasonable one time fee of course) to switch my verizon phones to xfinity.  But the monthly savings for the wireless service does not add up when you put the cost of new phones to replace relatively new, still to paid off phones into the mix.   BTW, the "we can't guarrantee it will work with our network" line is disingenuous.  The fact that Xfinity will not allow customers, particuarly from Verizon, to give it a try is simply about Xfinity's profits.  Of course. ... View more