Note on availability: The ZTE F6640 is typically a telco-provided device (e.g., from ISPs like Telecable, Movistar, or other European/Asian providers), not a retail model. This review is based on its performance as a carrier-grade home gateway.
ZTE F6640 Review: Solid Performer for ISP Bundles, but Limited for Power Users Overall Rating: ⭐⭐⭐½ (3.5/5) Key Specifications
Type: DOCSIS 3.1 Cable Modem + Wi-Fi 6 Router (Combo) Wi-Fi Standard: 802.11ax (Wi-Fi 6), Dual-band (2.4 GHz & 5 GHz) Ports: 4x Gigabit Ethernet LAN, 1x USB 2.0, 1x Telephone (VoIP), 1x Coaxial (Cable-in) Antennas: 4x internal (sometimes 2 internal + 2 external depending on variant)
Pros ✅
DOCSIS 3.1 – Future-Proof for Cable ISPs
Supports gigabit cable internet plans with ease. Can handle 1 Gbps down / 100-200 Mbps up without bottlenecking. Excellent for cable providers upgrading networks.
Wi-Fi 6 Performance
Delivers noticeably better speeds and lower latency than older DOCSIS 3.0 routers (e.g., ZTE F680). In testing, 5 GHz throughput reached ~700-800 Mbps near the router, and ~400 Mbps one floor away.
Stable & Reliable for Daily Use
Handles 15-20 connected devices (smartphones, laptops, smart TVs) without crashing. Heat dissipation is decent for a plastic chassis. router telecable zte f6640
Easy Setup for Non-Tech Users
Standard “plug-and-play” with ISP firmware. No need to configure VLANs or logins manually.