The 2G cell service that the 2011-2014 Leafs use was phased out and is now gone virtually everywhere. There is a 3G modem upgrade available from Nissan for $199, but results have been very mixed so far. Some people have no problems after the upgrade, others find things worse - no connection and a regularly dying 12 volt battery. Others have had to leave the car multiple times at the dealership before the problems were resolved.
2013 "Brilliant Silver" SV with Premium and no QC, a 2009 Vectrix VX-1 W/18 Leaf modules, and 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.