FRITZ!Box 3390 Service - Knowledge Base
- FRITZ!Box 7590
- FRITZ!Box 7581
- FRITZ!Box 7560
- FRITZ!Box 7530
- FRITZ!Box 7490
- FRITZ!Box 7430
- FRITZ!Box 7390
- FRITZ!Box 7369
- FRITZ!Box 7360
- FRITZ!Box 7340
- FRITZ!Box 7330
- FRITZ!Box 7272
- FRITZ!Box 6890 LTE
- FRITZ!Box 6840 LTE
- 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 N supports 802.11n/g/b/a (802.11n with 300 Mbit/s gross),
FRITZ!WLAN Stick N 2.4 supports 802.11n/g/b (802.11n with 150 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
The user data rate of the wireless standard being used determines the speed at which data is transmitted over wireless connections. The user data rate is significantly lower than the data rate given for wireless standards since a large part of it is required to establish and control 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 802.11n 3 / 40 MHz 450 Mbit/s 200 Mbit/s 2 / 40 MHz 300 Mbit/s 150 Mbit/s 1 / 40 MHz 150 Mbit/s 75 Mbit/s 3 / 20 MHz 195 Mbit/s 90 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 the wireless standard 802.11n depends on the number of data streams and the channel bandwidth. By default, the FRITZ!Box uses radio channels that are 40 MHz 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: