Want to keep your business and personal calls separate? The classic solution is to carry two phones, an option that's both awkward and expensive. Even if you ignore the cost of a second mobile phone, you can expect to pay $30-40 a month, plus taxes and fees, for that second line. That adds up to hundreds of dollars every year.
You could avoid some of the hassle by setting up a dedicated phone line in your office and forwarding business calls to your mobile device, but that just layers on a separate set of problems (including a lack of support for SMS messages) and another monthly bill.
After wrestling with this problem for years, I finally found a permanent solution in Line2[1], which offers a "virtual phone system" that's ideal for small businesses. I ported my old business number to Line2 three years ago, paying $100 per year for a standard account (the price has since gone up but I'm grandfathered in to the original price). I can now use that line on any Android device, iPhone, or iPad. There are capable PC and Mac apps as well. It's been a major productivity booster and has saved me a small fortune.
Line2
Online service that offers full-featured voice and messaging via an app
As the name suggests, a Line2 plan works with a matching app on your Android device or iPhone to provide up to five separate lines for voice calls, text messages, and group MMS messages. It can work over your mobile network or use Wi-Fi or cellular data to function as a VOIP device. The service includes the full set of features that you expect from a calling plan, including voicemail, intelligent call forwarding, and the ability to merge calls for on-the-fly conference calls.
Pricing: