Fanvil X4U V2 Review


It is well known that Fanvil X4U is a powerful and versatile IP phone designed for business and office use. It boasts a range of features and functionality that make it an ideal choice for any modern workplace. Since this phone was first released it has become a preferred model by many.

Due to the popularity that the phone has gained over time, Fanvil decided to introduce X4U V2. Yes, we know that changing an already winning formula can be risky. However, standing still is not an option either, especially in the constantly changing world of technology. Since the X4U model hit the jackpot with customers, Fanvil only gave a minor facelift to the next version. Fanvil X4U V2 is still as good as it has always been but now it is slightly improved. Keep reading to find what the key features and changes are.

Key Features:

Fanvil X4U V2 is a high-quality IP phone which provides clear and reliable communication with advanced call handling features, including call transfer, call hold, call forwarding, and many more. It is equipped with 2.8-inch colour display, 2.4-inch colour side display, multiple programmable buttons, and an easy-to-use interface. Fanvil X4U V2 can connect to EHS headset via EHS cable, highlights Wi-Fi connectivity – via Wi-Fi dongle, and can support Bluetooth via Bluetooth dongle.
Also, with support for Power over Ethernet (PoE), you can say goodbye to messy cords and complicated installation.


A big difference is the conference organiser which used to support only 3-way conference calls for the first version of the phone. Fanvil X4U V2 allows you to invite up to 5 people to join your call. This feature allows more team members to communicate and collaborate effectively, regardless of their location.

The main difference between Fanvil X4U and Fanvil X4U V2 is that the V2 model can function as an SBC (Session Border Controller). How is this possible?

It’s simple. All you need is the latest 3CX update (Version 6) and your trusty X4U V2 – no extra accessories required.
The X4U V2 has the SBC software seamlessly integrated into its firmware, establishing its dominance as a force to be reckoned within the field of communication technology.

As it may already be clear – the second version operates with a brand-new chipset. Having a new chipset requires a different firmware than the X4U one. Therefore, you will need to select X4U V2 when provisioning the phone to an extension on 3CX as shown on the image below.

Is X4U V2 worth it?

Absolutely! In summary, Fanvil X4U was already a hit, and version 2 is almost the same, it aims to keep users happy but at the same time it is a fresh and exciting new product. So, it feels like adding a cherry on top of an already delicious cake.