Here is the T-ZONES HACK file that is not available through Cydia, but it is here for those who have old data $5.99. Also works with $9.99 plan. T-zones hack file included below.
Let's Begin:
!!!Important Step!!! (((Please Turn of your WIFI so you can test it out))
""This is Tested on 2.2.1"" you could try it on 3.0 I didn't test it on 3.0 because of the bugs they have with 3.0 Firmware
(i dont guarantee anything). If you do let me know the outcome.
1. SSH into your iphone and drag the tzones_2.deb file into the window where you have Library and Media.
2. In the WinSCP, open Terminal Window and type in or copy paste(if it works)
a. dpkg -i tzones_2.deb (Make Sure You Type It Correctly) click execute.
3. After it comes to this Last Message in open terminal when you click execute
----""Setting up com.bigboss.tzones (2.0)"" ------
Installation is complete.
4. Close it out Reboot your iPhone!
((You can always remove T-Zones Hack through Cydia, Manage, Packages))
5. After Reboot and Upgrade Subcription Required message in Safari;
a. --Close Safari and go to Settings, General, Network, Cellular Data Network, and type in epc.tmobile.com
(For people with $5.99 data they use this one in the present time).
Also works with $9.99 data plan, setting for this is internet2.voicestream.com not epc.tmobile.com. Thank you
T-Zones Hack File DOWNLOAD
!!!File Will Start To Download Automatically From The Link"
APN'S:
internet2.voicestream.com
wap.voicestream.com
epc.voicestream.com
IF THIS POST WAS HELPFUL PLEASE HIT THANKS.
After you've done these steps am hoping you're Surfing the internet now. Thank you and I hope this helped.
SCREENSHOTS FROM MY 3G WITH 2.2.1 FIRMWARE

After I put internet2.voicestream.com in Cellular Data Netowork.