Sony SGPT211US/S Help Manual page 237

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Notes on Using the Wi-Fi Function
Use of Wi-Fi products may be restricted by local regulations in some countries or regions.
Wi-Fi devices work on the 2.4 GHz band, which is used by a variety of devices. Wi-Fi devices
use technology to minimize radio interference from other devices that use the same band.
However, radio interference may still cause slower data transfer speeds, reduce
communications range or cause communications failure.
If both the Bluetooth function and the 2.4 GHz Wi-Fi function of your tablet device are enabled,
interference may occur and cause slower data transfer speeds or other problems.
To communicate via Wi-Fi while traveling, you may need to contract with a Wi-Fi connection
service provider.
Data transfer speed and communications range may vary depending on the following
conditions:
Distance between devices
Presence of obstacles between devices
Device configuration
Signal conditions
Surrounding environment (wall material, etc.)
Software in use
Communications may be cut off depending on signal conditions.
The data transfer rate specified in the specification is the theoretical maximum, and may not
reflect actual data transfer rate.
Actual data transfer speed may not be as fast as the speed displayed on your tablet device.
Communications is not available between the 2.4 GHz and 5 GHz Wi-Fi frequency bands.
The data transfer rate for IEEE 802.11g and IEEE 802.11n (2.4 GHz) devices may be affected
by interference when used with IEEE 802.11b products. Also, products using IEEE 802.11g and
IEEE 802.11n automatically lower the transfer rate to maintain compatibility with IEEE 802.11b
products.
When the data transfer speed is not as fast as expected, changing the wireless channel on the
access point may increase the speed.
Related Topic
Starting Wi-Fi Communications
Wi-Fi checker
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