How to change APN settings to support HttpConnection on x4..

Archived from groups: alt.cellular.cingular (More info?)

This post is targeted towards software developers building
applications for the Samsung SGH-x427 phone. This phone (along with
many other models offered by Cingular) supports Suns J2ME (Java) MIDP
1.0 standard. This standard dictates that the phone support Http
networking which could easily be implemented to create wireless games,
offer custom web browsers, etc...

Unfortunately Cingular along with AT&T, T-Mobile, Sprint and all other
celular providers have collectively decided to lock-out this feature.
All "Java enabled" handsets support this, but the feature is
handicaped by the providers. Their reasoning behind this is security
concerns, however there is a clear misunderstanding of this
technology.

The reality is that there is no security issue! The Http connection
feature offered by Java for wirelesss devices is limited to the
application it is running under, the rest of the information on your
phone: date book, contacts, call list, other games and applications,
etc.. are all behind a virtual wall. The architecture the phone will
not allow games (or any other applications developed in J2ME) to
interact or have access to resources outside of what was delivered
with it, no exceptions. The hardware vendors (such as Samsung) as well
as Sun Microsystems (developers of mobile Java) have made this very
clear. However, cellular providers continue to ignore them and cripple
their phones.

For the reasons stated above the information I will provide here is of
no use to the average consumer. By changing your APN you WILL NOT
magically be able to play multiplayer games because no multiplayer
games exist! This information is only useful to developers who wish to
create such games. Since the APN settings must be altered in order to
play multiplayer games developed around HttpConnection, this
information is also of little commerical use to developers. It does
demonstrate for developers "what could be" and it turns on a useful
feature for developing prototype applications that could be
implemented for enterprise clients.

DISCLAIMER: THIS INFORMATION WAS PROVIDED BY SAMSUNG, IT ORIGINATED
FROM AN FAQ PROVIDED ON HTTP://DEVELOPR.SAMSUNGMOBILE.COM. USE AT YOUR
OWN RISK!


This information applies to Cingular networks only (I can not obtain
APN information for others)

On my x427 phone I followed the advice of the recent FAQ post and
changed by APN setting to the WAP APN. On Cingular networks the WAP
APN is

wap.cingular

The default (Internet) APN is

isp.cingular

Both appear to use the same username and password, this information is
provided by default with the phone I will not provide it hear
(Cingular wouldn't appriciate that I'm sure). To change APN settings,
follow the advice of the FAQ:

1. Type in *#9998*5282#. This will pull up a special menu for GPRS and
CSD Settings, select GPRS

2. Select the APN option and edit, the APN listed should be
isp.cingular, change it to wap.cingular and Save. Exit the GPRS/CSD
Settings menu.

Now attempt to run your MIDlet, if it connects great! Congulations. If
it doesn't here are some additional tips:

1. Make sure you are setting the HTTP Header to GET instead of POST.
POST. For some reason POST often causes problems.

HttpConnection conn;
//... this is incomplete, it is only an example
conn = (HttpConnection)Connector.open("http://24.175.111.50/J/aa.txt",
Connector.READ_WRITE);
conn.setRequestMethod(HttpConnection.GET);