Though many people do it, using your personal cell phone for work can be a costly mistake. First, it is hard to keep your personal life separate from work since calls for both are coming in on the same line. You likely will want to stop answering business calls when you are off the clock, but you cannot do that if you want to keep your cell on. Second, people could more easily find your personal information. Third, if you have given your personal number out to your clients, it will be hard to switch to a business account later- it could mean you lose clients if they can no longer reach you. One of the safest and most effective things to do is have a separate business phone. Though you may think it will be expensive to have two separate phone plans, you may be surprised at how affordable it can be. Read on for some of the best business phone plans.