Raise your hand if you actually read all eight pages of your monthly wireless bills. I thought so. You don't. That's exactly how your carrier wants it.\n\n\nMillions of AT&T, Verizon Wireless and T-Mobile customers have been cheated out of millions of dollars by carriers and third-parties that either bill them for services that are supposed to be free, or "cram" charges for services they never subscribed to.\n\n\nAll three of the carriers have been in hot water with federal regulators because of these practices, and they agreed to repay at least some of the questionable charges. Before I summarize the three most recent cases, I need to say this: Read your bills. It's no fun, and there's a lot of stuff in there you probably won't understand, but some charges jump right out at you.\n\n\nIt's very common for customers to be billed for ringtones, daily horoscopes or other services they never ordered. Those charges tend to be small, but when billed to millions of subscribers they become a bonanza for the carriers. Of course, it's still your hard-earned money, even if it's just a small amount.\n\n\nWhile scanning your bill you might also see charges for overseas calls you never placed, or calls to 900 or 976 area codes. These calls are generally billed by the minute and can be expensive.\n\n\nHere are more details on recent AT&T, T-Mobile and Verizon exploits:\n\n\nBack in July, the FTC sued T-Mobile\u00a0and accused the\u00a0so-called "un-carrier" of making hundreds of millions of dollars in fees for "premium" SMS subscriptions that, in many cases, customers never ordered. It now looks like\u00a0T-Mobile is going to settle. Typically, companies that settle in cases like this say "they admit no wrongdoing." We all know what that means.\nEarlier this month, AT&T agreed to pay $105 million to settle complaints from the FCC, FTC and 51 state-level governments that accused it of making millions of dollars through unauthorized third-party charges on customers' wireless bills.\nVerizon this week agreed to pay $64.2 million to settle an eight-year-old class action suit that claims the carrier improperly billed its Family SharePlan participants for overtime minutes, and for in-network and in-family calls. The motion asks U.S. District Judge Jose L. Linares to sign off on the agreement, which includes a $36.7 million cash payment from Verizon in addition to $27.5 million in "calling units." The proposed settlement (PDF) was filed last week in U.S. District Court in New Jersey. It was first reported by Law360.\n\n\nThere's one more lesson here. It's easy to harbor harsh feelings for "government bureaucrats," but regulators from the FCC, FTC and various states often don't get the credit they deserve for protecting consumers. They're far from perfect, but they provide valuable oversight. Without it, the carriers would get away with even more outrageous behavior.