There is a form to create a new user for my customer portal. It creates a new contact when the form fills out. 

The problem. It doesn't collect the mobile # or the mailing addresss. It does first name, last name, email, and phone number. What could be wrong?
 

/**
 * An apex page controller that supports self registration of users in communities that allow self registration
 */
public class CommunitiesSSignUpController {

    public String firstName {get; set;}
    public String lastName {get; set;}
    public String email {get; set;}
    public String password {get; set {password = value == null ? value : value.trim(); } }
    public String confirmPassword {get; set { confirmPassword = value == null ? value : value.trim(); } }
    public String communityNickname {get; set { communityNickname = value == null ? value : value.trim(); } }
    public String prefContactList { get; set; }
    public String mobilePhone { get; set; }
    public String homePhone { get; set; }
    public String mailingStreet { get; set; }
    public String mailingCity { get; set; }
    public String stateList { get; set; }
    public String mailingPostalCode { get; set; }
    public String Message {get; set; }
    public Boolean RegUserSuccessed { get; set; }

    
    public CommunitiesSSignUpController() {
        RegUserSuccessed=false;
    }
    
    public List<SelectOption> getStateCodes()
    {
        List<SelectOption> options = new List<SelectOption>();
        Schema.DescribeFieldResult fieldResult = Contact.MailingStateCode.getDescribe();
        List<Schema.PicklistEntry> ple = fieldResult.getPicklistValues();

        for( Schema.PicklistEntry f : ple ) {
            options.add(new SelectOption(f.getLabel(), f.getValue()));

        }
        
        system.debug('*********'+options);
        return options;
    }
    
    public List<SelectOption> getPrefContact()
    {
        List<SelectOption> options = new List<SelectOption>();
        Schema.DescribeFieldResult fieldResult = Contact.Preferred_Contact_Method__c.getDescribe();
        List<Schema.PicklistEntry> ple = fieldResult.getPicklistValues();

        for( Schema.PicklistEntry f : ple ) {
            options.add(new SelectOption(f.getLabel(), f.getValue()));

        }
        
        system.debug('*********'+options);
        return options;
    }    

    
    private boolean isValidPassword() {
        return password == confirmPassword;
    }

    public PageReference registerUser() {
        Boolean isEmailRegistered = false;
        List<User> users = [select Id from User where username = :email limit 1];
        if(users.size() > 0)
        {
            isEmailRegistered = true;
            Message = 'This email address already exists, click the Forgot Password link to generate a new password for it.';
             ApexPages.Message msg = new ApexPages.Message(ApexPages.Severity.ERROR, 'This email address already exists, click the Forgot Password link to generate a new password for it.');
            ApexPages.addMessage(msg);
        }
        if(!isEmailRegistered)
        {
           // it's okay if password is null - we'll send the user a random password in that case
            if (!isValidPassword()) {
                message = Label.site.passwords_dont_match;
                ApexPages.Message msg = new ApexPages.Message(ApexPages.Severity.ERROR, Label.site.passwords_dont_match);
                ApexPages.addMessage(msg);
                return null;
            }    
    
            String profileId = null; // To be filled in by customer.
            String roleEnum = null; // To be filled in by customer.
            String accountId = ''; // To be filled in by customer.
            
            String userName = email;
    
            User u = new User();
            u.Username = userName;
            u.Email = email;
            u.FirstName = firstName;
            u.LastName = lastName;
            u.Phone = homePhone;
            u.MobilePhone = mobilePhone;
            u.Street = mailingStreet;
            u.City = mailingCity;
            u.StateCode = stateList;
            u.PostalCode = mailingPostalCode;
            u.CommunityNickname = communityNickname;
    
            List<Account> communityAccts = [select Id from Account where Name = 'Community' limit 1];
            String communityAcctId = null;
            if(communityAccts.size() > 0)
            {
                communityAcctId = communityAccts[0].Id;
            }
            String userId = Site.createPortalUser(u, communityAcctId, null);
          system.debug('####' + userId);
            if (userId != null) { 
                RegUserSuccessed = true;
                Id cntId = [select ContactId from User where Id = :userId].COntactId;
                Id memberRecordTypeId = [select Id from RecordType where Name = 'Golden Opportunity' and sObjectType='COntact' limit 1].Id;
                COntact cnt = [select Preferred_Contact_Method__c, Phone, MobilePhone, MailingStreet, MailingCity, MailingStateCode, MailingPostalCode, RecordTypeId from Contact where id = :cntId];
                cnt.Preferred_Contact_Method__c = prefContactList;
                cnt.Phone = homePhone;
                cnt.MobilePhone = mobilePhone;
                cnt.MailingStreet = mailingStreet;
                cnt.MailingCity = mailingCity;
                cnt.MailingStateCode = stateList;
                cnt.MailingPostalCode = MailingPostalCode;
                cnt.RecordTypeId = memberRecordTypeId;
                
                update cnt;
                
                if (password != null && password.length() > 1) {
                    return Site.login(userName, password, ApexPages.currentPage().getParameters().get('startURL'));
                }
            }
            else
            {
                RegUserSuccessed = false;
            }
            
        }
        return null;
    }
}