FRITZ!Box 4040 Service - Knowledge Base
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- FRITZ!Box 7581
- FRITZ!Box 7560
- FRITZ!Box 7490
- FRITZ!Box 7430
- FRITZ!Box 7390
- FRITZ!Box 7369
- FRITZ!Box 6820 LTE
- FRITZ!Box 6810 LTE
- FRITZ!Box 6591 Cable
- FRITZ!Box 6590 Cable
- FRITZ!Box 6490 Cable
- FRITZ!Box 5491
Slow wireless connection (low data rate)
The data rate of the wireless connection (WiFi) established by a wireless device, for example a computer, smartphone, or tablet, to the FRITZ!Box is lower than allowed by the wireless standard. As a result, web pages load slowly, it takes a long time to download files, and video streams are either not displayed correctly or stop playing, for example.
1 Checking which wireless standards the wireless device supports
- Find out which wireless standards the wireless device supports and the maximum data rate it can establish wireless connections with. Refer to the manufacturer for information on the wireless device, for example consult the manual.
Note:FRITZ!WLAN Stick AC 430 supports 802.11ac/n/g/b/a (802.11ac with 433 Mbit/s gross),
FRITZ!WLAN Stick N supports 802.11n/g/b/a (802.11n with 300 Mbit/s gross),
FRITZ!WLAN Stick supports 802.11n/g/b (802.11n with 150 Mbit/s gross).
2 Determining the user data rate of the wireless connection
- Determine the user data rate of the wireless connection according to the standard being used by the wireless device:
Wireless standard Data streams /
Data rate up to User data rate up to 802.11ac 2 / 80 MHz 866 Mbit/s 430 Mbit/s 1 / 80 MHz 433 Mbit/s 215 Mbit/s 2 / 40 MHz 400 Mbit/s 180 Mbit/s 1 / 40 MHz 200 Mbit/s 90 Mbit/s 2 / 20 MHz 173 Mbit/s 85 Mbit/s 1 / 20 MHz 86 Mbit/s 40 Mbit/s 802.11n 2 / 40 MHz 400 Mbit/s 200 Mbit/s 1 / 40 MHz 200 Mbit/s 100 Mbit/s 2 / 20 MHz 130 Mbit/s 60 Mbit/s 1 / 20 MHz 65 Mbit/s 30 Mbit/s 802.11g - 54 Mbit/s 25 Mbit/s 802.11b - 11 Mbit/s 5 Mbit/s 802.11a - 54 Mbit/s 25 Mbit/s Table: Throughput rates according to wireless standard
Important:The maximum data rate for wireless standards 802.11n and 802.11ac depends on the number of data streams and the channel bandwidth. By default, the FRITZ!Box uses radio channels that are 40 MHz (802.11n) or 80 MHz (802.11ac) wide.
If the data throughput of the wireless device is nearly as high as the user data rate of the wireless connection, there is no error.
3 Optimizing the wireless connection
Perform the following step if the data throughput of the wireless device is significantly lower than the user data rate of the wireless connection:
- Optimize the wireless connection as described in the guide for the wireless standard used by the wireless device: