FRITZ!Box 6850 4G

The FRITZ!Box 6850 4G offers a fast internet connection via 4G/LTE with data rates of up to 300 Mbit/s while simultaneously offering dual-band Wi-Fi 5. As a versatile hub in the home or office network, it reliably connects many devices such as computers, smartphones, tablets, TVs and printers. 

The FRITZ!Box 6850 4G also impresses with its convenient telephony, intelligent security functions, comprehensive smart home features via DECT ULE, and its powerful FRITZ!OS.

Maximum flexibility for ideal reception

To ensure a reliable connection even under fluctuating network conditions, the FRITZ!Box 6850 4G transmits in 11 4G (LTE)
and in three 3G (UMTS/HSPA+) bands. If needed, external mobile network antennas can be connected as well to
further optimize reception quality. An integrated alignment aid helps the user find the ideal location and best
positioning for the antennas. A special bonus is the option for targeted selection of individual
mobile network bands – for more control, stable performance and optimal usage of the available network resources.

Wi-Fi 5 and Mesh Wi-Fi with FRITZ!

The FRITZ!Box 6850 4G transmits concurrently on the 2.4 GHz (Wireless N) and 5 GHz (Wireless AC) frequency bands, so that
total data rates of up to 1266 Mbit/s can be achieved. In combination with a FRITZ!Repeater or
FRITZ!Powerline adapter (with Wi-Fi), users benefit from Mesh: FRITZ! devices throughout the home work
in a single network, communicating with each other and optimizing wireless devices and network usage.

Communication and entertainment throughout the smart home

The FRITZ!Box 6850 4G combines comprehensive communication and multimedia functions: the integrated VoIP phone system supports classic phone connections, up to six DECT phones and smartphones with functions like answering machine and phone books. With the DECT base station, FRITZ! smart home products for heating and electricity are easy to integrate. What's more, the FRITZ!Box 6850 4G offers an integrated media server with NAS linkup, which makes films, music and images on USB storage media or online services available for streaming to playback devices throughout the network.


  • Mobile internet via LTE (4G) and UMTS/HSPA+ (3G)
  • Phone system (IP-based), cordless telephony, smart home
  • Wi-Fi up to 866 + 400 Mbit/s
  • Easy to use and smart apps
  • Network with 4 x gigabit LAN, 1 x USB 3.0
  • Media server, NAS, MyFRITZ!, auto updates

Technical Specifications

Interfaces

  • Integrated 4G mobile phone modem (mini-SIM)
  • IP-based telephony
  • four gigabit LAN ports
  • Wi-Fi 5 and Wi-Fi 4
  • 1 x USB 3.0 port for storage media and printers
  • DECT base station for cordless phones and smart home
  • 1 x connection (TAE/RJ11) for analogue phone, answering machine or fax

Mobile network / internet

  • Wireless router with integrated LTE (4G) category 4 modem for FDD band 1 (2.1 GHz), band 3 (1.8 GHz), band 5 (850 MHz), band 7 (2.6 GHz), band 8 (900 MHz), band 20 (800 MHz), band 28 (700 MHz) and band 32 (1.5 GHz)
  • Also for TDD band 38 (2.6 GHz), band 40 (2.3 GHz) and band 41 (2.5 GHz)
  • Internet connection also via 3G (UMTS/HSPA+) with up to 42 Mbit/s
  • Option for connecting outdoor antennas
  • MyFRITZ! – secure access to your own FRITZ!Box from anywhere
  • VPN (WireGuard / IPSec)
  • Firewall / NAT with port sharing
  • Wake on LAN
  • Parental controls (time budget, youth protection filter, device block)

Wi-Fi

  • up to 1266 Mbit/s via Wi-Fi 5
  • 5 GHz: up to 866 Mbit/s (Wi-Fi 5); 2.4 GHz: up to 400 Mbit/s (Wi-Fi 4)
  • Mesh Wi-Fi
  • Compatible with the IEEE 802.11a/g/n/ac Wi-Fi standards
  • Wi-Fi encryption with WPA3/WPA2
  • Turn Wi-Fi on and off using button, FRITZ!Fon, FRITZ!App, or by schedule
  • Easy connection at the touch of a button (WPS)
  • Wi-Fi guest access / hotspot with captive portal
  • Wi-Fi eco mode for optimal performance at minimum energy consumption

Smart home / media

  • Smart home features for energy and heating
  • Supports smart home devices in accordance with the DECT ULE standard
  • Automation in the smart home with schedules, scenes, and routines with if-then combinations
  • Operation of your FRITZ! Smart Home via the FRITZ!Box user interface, FRITZ!Fon, FRITZ!DECT smart switch or FRITZ!App Smart Home
  • FRITZ!NAS: Central storage for all data in the home network
  • Media server for music, photos, and videos in the home network (DLNA/UPnP AV)
  • Ideal for IPTV and streaming music and videos

Telephony

  • Phone system for IP and mobile broadband (VoLTE)
  • Phone system with DECT base station for up to six cordless phones
  • Voice transmission encrypted upon delivery
  • With FRITZ!Fon additional functions (e.g. calendar or weather forecast)
  • Connection for an analogue phone, answering machine, or fax
  • Supports HD telephony for natural sound
  • DECT Eco: Radio network turns off when DECT phones on standby
  • Five integrated answering machines with option to email voice messages
  • Fax function with option to email fax message
  • Local and online phone books (Google, Apple, CardDAV and more)
  • Call lists, call block settings, quick-dial numbers, extensions
  • Dialling rules for individualized use of phone numbers
  • Call diversion, internal calls (intercom), three-way conferencing, call transfer, phone number blocks, and Do Not Disturb
  • Alarm, baby monitor, VIP calls, and Do not Disturb
  • Support for door intercom systems
  • Registration of IP phones (LAN/Wi-Fi) according to the SIP standard

FRITZ!OS

  • Intuitive browser- and app-based user interface
  • Free FRITZ!Apps for smartphone: MyFRITZ!App, FRITZ!App Smart Home, FRITZ!App Fon, FRITZ!App Wi-Fi, FRITZ!App TV
  • Context-sensitive Online Help
  • Push service mails for events in the home network
  • Security functions with diagnostic tool, Automatic Update, firewall, and filter functions
  • Free updates with new functions and optimizations

Package Contents

  • FRITZ!Box 6850 4G
  • Power adapter
  • External LTE antennas
  • 1.5-metre LAN cable
  • Quick guide

Device properties

  • Article number: 20003084 (retail version)
  • Dimensions (W x D x H):  208 x 37 x 150 mm
  • Mount on wall or place on any surface, e.g. a table or shelf
  • Average energy consumption: 6 W

Have any questions?

We're happy to answer them for you! You can find out how to get in touch with your contact person under Contact.

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