iOS Application works only on a wi-fi

[Shrunga]

I'm having a major problem with my application when using anything other than a wifi connection.

I'm trying to login using a web-service which just return a success or a failure message based on the credentials.

For some reason it appears that the following code cant locate the host and times out after the time-out period. This happens only when using Edge/3G but NOT wifi.

I have pasted the code below. I did try with both synchronous and asychronous calls. But in vain.

Please let me know if there is anything that Im missing out. Im lost on this , any help is heartily appreciated.

-(void)prepareXMLForLoginRequest
{
	
	NSString *theXMLString = [[NSString alloc] initWithFormat:@"%@%@%@%@%@%@%@%@%@%@",
							  @"<?xml version=\"1.0\" encoding=\"utf-8\"?>",
							  @"<soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">",
							  @"<soap:Body>",
							  @"<UserLogin xmlns=\"",
							  SOAPACTION_NAMESPACE_URL,
							  @"\"><userLogin><LOGIN><EMAIL>",
							  @"mferraby@wyanokeis.com",
							  @"</EMAIL><PSWD>",
							  @"unknown",
							  @"</PSWD></LOGIN></userLogin></UserLogin></soap:Body></soap:Envelope>"];
	
	
	NSLog(@"Request		:%@",theXMLString);
	NSString *theWebServiceURLString = [[NSString alloc] initWithFormat:@"%@%@",WEB_SERVICE_URL, @"UserAuthentication.asmx"];
	
	NSString *theURLString = [[NSString alloc] initWithFormat:@"%@%@",SOAPACTION_NAMESPACE_URL, @"UserLogin"];
	NSDictionary *theRequestHeader = [[NSDictionary alloc] initWithObjectsAndKeys:HOST,@"Host",
	@"text/xml; charset=utf-8", @"Content-Type",
	theURLString,@"SOAPAction",
	nil];
	
	NSMutableURLRequest  *theRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:theWebServiceURLString]
	cachePolicy:NSURLRequestUseProtocolCachePolicy
	timeoutInterval:60.0];
	[theRequest setHTTPMethod:@"POST"];
	[theRequest setAllHTTPHeaderFields:theRequestHeader];
	[theRequest setHTTPBody:[theXMLString dataUsingEncoding:NSUTF8StringEncoding]];
	[theRequest setHTTPShouldHandleCookies:NO];
	[theRequest setHTTPShouldHandleCookies:NO];
	
	[[NSURLCache sharedURLCache] setMemoryCapacity:0];
	[[NSURLCache sharedURLCache] setDiskCapacity:0];
	
	
	mURLConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
	
	[theXMLString release]; theXMLString = nil;
	[theURLString release ]; theURLString = nil;
	[theRequestHeader release]; theRequestHeader = nil;
	[theWebServiceURLString release]; theWebServiceURLString= nil;
	
}