Grab your pitchforks Verizon customers, unlimited data may be a thing of the past when 4G rolls out, according to CEO Lowell McAdam. In a conversation with investors yesterday, McAdam said that he doesn't think that unlimited data plans will make sense when the company's 4G network launches and by not making sense, we assume he means to Verizon's bottom line.

Most subscribers currently pay about $30 per month for unlimited data (many still have a 5GB cap), but the carrier may soon turn to tiered plans where people purchase a set amount of monthly megabytes. Naturally, customers under such a model would have to be careful to avoid overage penalties. Interestingly, this comes even though McAdams says the cost of carrying 1MB of data over LTE will be a half to a third cheaper than doing it over 3G.

Verizon isn't the only mobile operator looking to make the switch in pricing schemes, mind you. Both AT&T and Sprint have expressed similar interests.