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AT&T's 3G network requires a connection to the internet with MediaNet to enjoy 3G
Data transfer. What AT&T doesn't tell it's customers before they purchase a new 3G
phone like the Samsung Jack is that MediaNet is actually disabled by default in the
phone's 'Internet Sharing' program while tethered to a PC.
This limitation prevents AT&T's 3G phones from using the faster 3G technology and only
allows connecting to the Internet through the slower GSM network while tethering. In
speed comparison, GSM is to 3G as dial-up is to broadband.
Because the Samsung Jack is capable of blazing fast speeds with it's HSDPA 3.6
technology, by limiting the phone's connection options to the slower GSM network while
tethering is a complete waste of the phone's fantastic capabilities. However, by unlocking
the Samsung Jack's 'Internet Sharing' program the phone can then connect to MediaNet
when tethered to a PC. This results in a noticeably faster transfer of data on AT&T's 3G
Here, we're going to show how to unlock the Jack's 'Internet Sharing' program to
use MediaNet and enjoy AT&T's faster 3G network while tethering.
In order to better understand our goal - to tether the Samsung Jack on AT&T's 3G
network - it's important to actually see the end result. Shown below are before and after
pictures of the connection options displayed on a Samsung Jack.
The first photo shows the display screen of the Jack with a locked 'Internet Sharing'
program. The second photo shows the benefit of unlocking this program where the
option to select MediaNet when tethering is now available.