Sending post request does not send post body to server - iphone

Question

I have the following code used to post data to a remote server:
NSString *urlStr = [[NSString alloc] initWithFormat: #"http://www.myserver.com/%#",program ];
NSString *postBody =[[NSString alloc] initWithFormat:#"uid=%#",parms];
NSMutableURLRequest *request;
NSData *postData = [postBody dataUsingEncoding:NSISOLatin1StringEncoding];
NSError *error;
NSURLResponse *response;
NSData *dataReply;
request = [NSMutableURLRequest requestWithURL: [NSURL URLWithString:urlStr]];
[request setHTTPMethod: #"POST"];
[request setHTTPBody:postData];
dataReply = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
serverResponse = (NSString *)[[NSString alloc] initWithData:dataReply encoding:NSUTF8StringEncoding];
[postBody release];
[urlStr release];
program is the php program to run on the server. parms is the string to be posted in the format:
\ntoken=12345
Here's the problem: This works fine from the simulator. It works fine on my 3gs development phone. It works fine on a beta tester's 3gs phone that I emailed the app to. It does NOT work fine on another beta tester's iPhone 4 (emailed to him the exact same provision file and ipa file). The POST call is made from the iPhone 4 to the server but no post body is passed. I log each of the calls to the server on the server. The post body is there for the 3gs phones, not for the 4 phone. There are no errors generated in the Apache logs.
Is there some difference between the two phone models that I need to account for? I have tried both http and https access with the same behavior. I don't currently have access to an iPhone 4 so any insight would be a great help.

Answer 1

The answer is not model related. It has to do with the name of the phone which is passed as a parameter to the server. The name contains an apostrophe as in Mike's iPhone.