Many small-business owners are unhappy with their mobile and traditional communications providers. Most plans offer a limited amount of data and minutes per month, which can lead to hundreds or even thousands of dollars in additional fees for going over the limits. Most companies also require a two-year commitment to a specific plan with stiff penalties if you decide to break the contract, even if you do so for poor service or another justifiable reason.

If you want to avoid being in this situation, consider using a Mobile Virtual Network Operator, or MVNO. These companies sell communications services in plans that are far more compelling to small-business owners. Their pricing and terms are very competitive because they haven't spent billions of dollars building out a physical communications network; instead, they lease access to existing networks. MVNOs typically offer unlimited data and communications—including 4G service—for a flat month price. They also don't require a contract, and are priced month-to-month. Some require that you purchase devices from them at unsubsidized prices, while others let you use your existing phones if they're compatible. Even after taking into account the cost of purchasing phones, the savings can be significant.

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