Roger Cheng, reporting for CNET: Big changes are afoot at Verizon. The nation's largest wireless carrier is set to unveil changes to its plans that will make them more expensive, but will also include more data, according to someone familiar with the changes. The low-end "S" plan will go up by $5 to $35 a month, but will include 2 gigabytes of data, twice as much as before. The "M" plan will go up by $5 to $50 a month, while its data will rise from 3GB to 4GB. The "L" plan will go up by $10 to $70 a month, while data increases from 6GB to 8GB. The "XL" plan will go up by $10 to $90 a month, but you'll get 16GB, up from 12GB before. Lastly, the "XXL" plan will cost $10 more at $110 a month, but you will get 24GB instead of 18GB. The changes are part of a broader overhaul of its plans, which will also include a rollover data program called "Carryover Data," a new way to avoid overage fees, and better access to Canada and Mexico. The move reflects a heightened competitive environment, one in which smaller rivals T-Mobile and Sprint have begun winning away customers through aggressive offers. Many of these changes mimic offers already available at the other carriers.