Verizon Wireless has been trying to coax its remaining unlimited data customers onto its tiered plans for years, and starting this fall it’s providing one more disincentive to remain with its grandfathered all-you-can-eat plans. On October 1, Verizon will start throttling back LTE speeds on its heaviest unlimited-plan subscribers when they move into congested cells on the networks. What that means is that when the network gets crowded, Verizon will prioritize 4G customers who buy their data by the gigabyte over unlimited plan customers who fall into the top fifth percentile of monthly data usage. As of today, the top five percent consists of customers who use 4.7GB or more of data each month, though that number will fluctuate month-to-month as traffic patterns change.