4th Nov, 2009, Samsung MObile USA offical announced the At & t samsung jack windows mobile 6.5 update!
offical links here
Windows Mobile 6.5 upgrade for AT & T SAMSUNG jack is avaiable Now. with this upgrade, you can feel at & t samsung jack more features as:
1) Windows Marketplace for Mobile:
2) Internet Explorer Mobile 6 , same as you seen on PC, support Full Flash, Youtube,social site like Facebook or MySpace.
3) At & t WI FI
4) Vlingo for Windows Phone: Instantly send a text or email message,call a friend, search the Web, open native applications and more, all by speaking into your Samsung Jack Windows phone.
to download the upgrade please visit www.samsung.com/us/i637/windowsmobileupgrade6_5.
Enjoy it..
Ref: AT & T samsung jack tricks, AT & T samsung jack tricks & tips, google maps, samsung jack apps.
how to use google maps on my samsung jack, the fact is the SGH-I637 (Jack) handset’s Internet Explorer browser allows the use of Google maps without downloading any additional applications., so no need of any 3rd part google maps, just the jack Internet Explorer browser is ok.
Ref: AT & T SAMSUNG jack, move pictures between computer and Jack, transfer pictures
As many people need to transfer pictures or video between their computer and the samsun Jack. so what is the way, and how to make it happen? there are two options to go, one is via Microsoft ActiveSync and another is via Memory card. so here we share the tips guide for how to transfer pictures or video via Memory card.
Before try this option, please be note that the AT & T samsung jack does support the use of a microSDHC 16GB capacity memory card. However, for optimal performance Samsung recommends using a card no larger than 2GB.
Insert a microSD memory card into the memory card slot
Click to learn how to insert a memory card
From the home screen, press the left soft key for Start
Press the left soft key for More
Select My Stuff (2)
Navigate to the folder that contains the image(s), such as My Pictures
Highlight the desired image
Press the right soft key for Menu
Select Edit (4)
Select Copy/Move (2) or choose Select All (7), Menu, Edit (4), Copy/Move (2)
At the top, select either Copy To or Move To, using the navigation keys
Navigate to the Storage Card, using the navigation keys
Press the OK key to highlight a Storage Card folder
Press the left soft key for Select to Copy or Move the image(s) to the microSD memory card
So here you go,, enjoy it..
Ref: Tips & tricks for samsung jack, which give the answers to how to add signatures for samsung jack outgoing text message, if the samsung jack support signature with the outgoing message, and how to add the signatures for samgsun jack text-messaging.
Yes, to add a signature to outgoing messages follow the steps below:
From the home screen, press the left soft key for Start
Select Messaging (1)
Select Messages (1)
Press the right soft key for Menu
Select Tools (7)
Select Options (3)
Select Signatures (3)
From the Messages account, highlight "Use signature with this account"
then press the OK key to check the box
Highlight the Signature box then press the clear key 
Enter the desired Signature, using the keypad
Press the left soft key for Done to save Messages account Signature
The post answers to your puzzle: how to restore samsung jack settings. how to reset jack factor default settings, hard reset on samsung jack, master reset on samsung jack, factory default settings for samsung Jack i637
For the purpose of reset the SGH-I637 (Jack), there are two different methods to reset the factory settings, Master Clear (Erases user storage) and Master Reset (Erases the registry). These can both be accomplished thru the phone menus or using the handset buttons.
To reset the handset’s factory settings, via menus, follow the steps below:
WARNING: This Reset will Delete ALL added Data from the Handsets Memory
From the home screen, press the left soft key for Start
Press the left soft key for More
Press the left soft key for More again
Select Settings
Select More (7) to display more settings
Select Security (1)
Select More (7) to display more settings
Select either Master Clear (2) or Master Reset (3)
With Device highlighted, press the left soft key for Yes to confirm resetting the handset to the factory default settings
To reset the handset’s factory settings, via buttons, follow the steps below:
WARNING: This Reset will Delete ALL added Data from the Handsets Memory
When the handset is powered off, Press and Hold the 5 key then power on the handset
Press either the 1 key (Master Clear) or 2 key (Master Reset) at the Format Menu screen then press the Y key (Yes) at the confirmation prompt
Note: To turn the SGH-I637 (Jack) on or off simply Press & Hold the power button , located on the upper left side of the handset.