Replace the ISP router only if your provider permits it and the new equipment can connect to your broadband service using the required settings. If the supplied hub is needed for Digital Voice, keeping it and adding an access point may preserve the phone setup; where the provider supports modem mode, you may instead be able to use your own router as the gateway, but some hub functions can be lost.
If you need to manage local DNS, DHCP, port forwarding or firewall rules yourself, check whether your equipment can become the active gateway. Identify your broadband connection and confirm the provider's router policy and login settings before choosing a device.
If your home phone uses the broadband service, establish whether it connects through the provider hub, an adapter or an ONT telephone port. Keeping the supplied equipment may be necessary to preserve calling while you change your Wi-Fi setup.
If the connection works but coverage is poor in parts of the home, an access point or mesh system in access-point mode lets you retain the ISP gateway. That changes the wireless setup without assuming a new device can replace the broadband or voice connection.
Choose when: Your ISP permits a personal router and you can match its broadband connection and authentication settings.
Trade-off: You take responsibility for setup and may need to reconnect the supplied router for provider troubleshooting, as BT Business notes for its service.
Choose when: Your provider documents modem mode for your hub and you want a personal router to handle the home network.
Trade-off: Hub features can change or become unavailable. Virgin Media's modem mode is not available on Hub 5x, so check the exact hub model.
Choose when: The hub must remain for routing or voice, but you want different Wi-Fi equipment.
Trade-off: An added access point does not give you control of the hub's gateway functions. ASUS says NAT and firewall functions are disabled by default in AP mode on supported models.
| Concern | What to check | Who this matters to |
|---|---|---|
| Broadband compatibility | Identify the connection to the existing equipment and confirm the new device's WAN or modem capability, plus any ISP login or VLAN settings. | If I replace the hub, I need the new equipment to establish my actual broadband connection, not just provide Wi-Fi. Around 38% of consumers put connection compatibility first. |
| Digital Voice continuity | Ask the provider where the phone connects and whether it will work with the intended setup; discuss power-cut arrangements if you rely on the landline. | When my home phone depends on broadband equipment, I need calling to survive a change of router setup. Roughly 31% of consumers place voice continuity first. |
| Local network control | Check which device will handle DHCP, NAT and firewall rules, and whether the ISP hub supports a documented modem or bridge mode. | If I want to manage routing settings myself, an added device in access-point mode will not take over the gateway. About 23% of consumers prioritise that control. |
| Wi-Fi coverage | Check for access-point mode and a suitable wired connection from the hub to the added access point or main mesh unit. | If broadband and the home phone already work, I would rather address weak Wi-Fi without changing their setup. Approximately 8% of consumers put coverage while retaining the gateway first. |
An Openreach FTTP installation with an ONT presents an Ethernet connection to the router, while an ADSL or VDSL line can require compatible modem equipment. Wi-Fi features alone do not establish whether a router can connect to your service.
Check whether the current equipment connects to an ONT, a telephone socket or a cable-provider hub. Then confirm the ISP's connection settings and the port or modem capability your replacement needs.
Ofcom explains that digital landlines run over broadband. Removing equipment used by the provider's phone setup could interrupt calling; without specific backup, VoIP products will not work during a power cut.
Ask your provider where the handset must connect and whether your proposed router arrangement preserves service. Mention any care alarm or other device that uses the phone connection.
A personal router behind an ISP router can create double NAT, complicating some local-network and inbound-connection uses.
If available for your equipment, use the provider's documented modem or bridge mode when the personal router will be the gateway. Otherwise, consider access-point mode for the added Wi-Fi system and confirm which device handles DHCP and NAT.
Provider support for faults involving personal equipment can be limited. BT Business says its main technical helpdesk does not support third-party routers, and Vodafone says customers with speed or reliability problems using a non-Vodafone router need to reconnect its router.
Keep the supplied hub, power supply and cables so you can restore the original setup for a provider fault test.
Its Deco mesh systems are relevant if you are considering a main router or Wi-Fi equipment alongside an existing ISP gateway.
Supported ASUS routers offer an access-point route when the ISP gateway needs to stay in place.
Its Orbi range is relevant when a household is considering a multi-node Wi-Fi system.
An Openreach FTTP ONT provides an Ethernet connection for a router's WAN port, but you still need to confirm that your ISP permits the setup. Check its authentication and VLAN requirements, and establish how any home-phone service will work before replacing the supplied router.
Vodafone says its router must be used on Pro Broadband, 5G Broadband and plans with Digital Voice. For other broadband plans, Vodafone says a non-Vodafone router may be used if it is Openreach-approved; contact Vodafone for the required username and password, and keep its router for troubleshooting.
Plusnet provides settings for personal routers, provided the equipment is compatible with its broadband network. Check the settings for your own service before buying: its published examples distinguish ADSL from fibre connection settings.
Virgin Media says 21CV/VoIP telephony continues to work in modem mode on supported Hub 3, 4 and 5 models. Modem mode is not available on Hub 5x, and other hub functions are disabled while modem mode is active, so check your hub model and phone arrangement first.
Not without a suitable backup arrangement: Ofcom states that VoIP products will not work during a power cut without specific backup. If you rely on the landline for emergency calls or a care alarm, discuss the equipment and resilience arrangements with your provider before changing the router setup.