Although free VoIP services can be a great option for individuals and small businesses, there are plenty of limitations to be aware of:
Lack of security: Most free VoIP providers offer the most basic security features, which pale in comparison to those provided by paid solutions. Plus, it’s essential to read the company’s data usage policies, as free services are known for selling users’ information to third parties.
Basic features: Free VoIP providers might be enough to make and receive calls, but they don’t usually offer advanced features like call forwarding, IVR, and call transfer.
Limited customer services: Free VoIP providers’ customer service is usually limited to email, and response times may take several days.
Call rates: Normally, free VoIP providers offer the service at zero cost but charge for the calls you make. While this may be fine for individuals or small companies, larger enterprises may find themselves paying more on a monthly basis in call rates than they would with a paid VoIP subscription with unlimited calling.