Performing the process to
Unlock iPhone 4/4S is definitely
frowned upon by many carriers
because they lose the very
feature that binds their
customers to their exclusive
services. But on your part as an
end-user, this will surely bring
you many advantages like
absolute savings and freedom to
choose the service that you like
from different providers.
If you want to do this to your
device, just follow the easy steps
below:
First of all, in order to get started,
you’ll be needing the correct
tools. You can download them
here:
Unlock Tools
Step 1 – Disable iTunes
The first thing that you have to
do to ensure that you will
successfully open the line of your
gadget without any interference
by other apps is by disabling
iTunes. If you are using a
Windows computer, just open
the Task Manager and end the
program. But if you are
operating a Mac computer, you
can close it through the Apple
Activity Monitor.
Step 2 – Connect The Mobile
Device To Your Computer
Using the USB cable, insert one
end to your Apple gadget and
the other end to the port of your
computer.
Step 3 – Get The Software
Download the software, which is
linked above before step 1.
Step 4 – Install It
Click the executable file of the
software from the destination
folder of your download. Once it
initiates, just confirm the
installation by choosing the right
response from the set of choices
and by accepting the terms and
conditions of its developer.
Step 5 – Install The Associated
Apps
From the options that you will
encounter, enable the download
and installation of the additional
applications that are displayed.
Step 6 – Customize Settings
Open iTunes and access its
Settings. Change the “Auto”
feature to “Never” then take note
of your device’s IP add which you
can see in the Wi-Fi section of the
Settings.
Step 7 – Configure Cyberduck
Go to the “Open Connection”
option of Cyberduck and enter
the IP address that you got.
Check and make sure that its port
is also set to 22 and that the SFTP
tab is active. Cut and paste or
drag the file with the .app
extension among the associated
apps that you downloaded into
Cyberduck’s Applications folder.
Step 8 – Remove SIM
Shut down your Apple gadget
and remove its SIM card. Then
restart it which will reveal a
prompt that will let you open the
line of your device.
Step 9 – Start The Process
Click the Start icon to begin the
automatic process of removing
the restrictions of your carrier.
Wait for a few minutes for the
automatic procedure to
complete.
Step 10 – Test It
Upon the completion of the last
step, test if your line is already
open by inserting another SIM
and reboot your device. If you
can already use its
communication features, then
you just successfully
accomplished the task.

Good Unlocking I-phone 4S/4 sharing using the unlocking Tool.But this is very big unlocking process.So professionals can use this method and unlock i-phones.I have unlocked my I-phone 4 and 4S using remote unlocking service.I got remote unlocking service from the site Superunlockcodes.com and unlocked it from network lock.I have followed few unlocking instructions to unlock my iphone.

@kiggster, thanks for sharing such a useful info with us. My question is, what are the steps to unlock ipad3? Thanks