Yes, you can! But only if one of the devices is your computer (PC or Mac). Viber Media Inc. launched Viber desktop version in May 2013. read more about Viber desktop…
What does it mean? Well, it means that you still can not have one Viber account on multiple devices. At this stage, one Viber number can be assigned with only one device simultaneously. When you try registering to Viber with the same number on a second device, the first device immediately deactivates, and its data (message history, Recents, etc.) is deleted. What you can do, however, is register your second device with a different number: your home number, an old cellphone number, family’s or friends… The only requirement is that you are able to receive an activation SMS on it.
In future versions Viber Media Inc. is planning to add an option to register Viber on multiple devices.



