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Tethering allows your mobile device to act as a wireless hotspot for your other devices such as your laptop, tablet or other similar device.
With the 4G LTE connectivity speeds on your Lumia 900, it will be great to share the internet speed with your other devices. LTE connectivity promises speeds between 15 – 20 Mbps which is 10 times faster than 3G phones.
The feature will remain exclusive to the Lumia 900 for now, with other Lumia devices including the Nokia Lumia 710 and the Nokia Lumia 800 to receive it sometime in the near future.
Have you received this software update on your device ? Let us know how its working for you.
source – Nokia