Getting the device information using UIDevice

The UIDevice class provides all the information of the device on which your app is running.

UIDevice *deviceInfo = [UIDevice currentDevice]; 

NSLog(@“OS running on device: %@”, deviceInfo.systemName);

   // OS running on device: iPhone OS

NSLog(@“OS Version running on device:  %@”, deviceInfo.systemVersion);

  //OS Version running on device:  7.1

NSLog(@“Device model:  %@”, deviceInfo.model);   

  // Device model:  iPod touch

size_t size;

sysctlbyname("hw.machine", NULL, &size, NULL, 0);

char *machine = malloc(size);

sysctlbyname("hw.machine", machine, &size, NULL, 0);

NSString *deviceModelVersion = [NSString stringWithCString:machine encoding:NSUTF8StringEncoding];

free(machine);

NSLog(@"Device model version: %@", deviceModelVersion);

//Device model version: iPhone4, 1

NSLog(@“Device name:  %@”, deviceInfo.name); 

  //Device name:  my iPod 

Steps to submit an iOS App to the App Store

Below information is provided by assuming that you are a registered iOS developer i.e., you are enrolled in Apple's iOS Developer Program and are allowed to submit applications for publication in the App Store.

Step 1:

For submitting your application to the App Store, you should first prepare all the below needs 

(a)

i) an App ID or application identifier

ii) a valid distribution certificate 

iii) a valid provisioning profile.

(b) Your application's Metadata :

1) Application's name 

2) The version number 

3) The primary (and an optional secondary) category

4) App description

5) Keywords 

6) Copy right

7) SKU Number (Stock keeping Unit)

8) Screen shots

9) Support email address

10) A support URL

11) Test or demo account  (if your application require users to sign in?)

12) End user liucence agreement

13) 1024px x 1024px icon of ur app

14) Separate screenshots for the 3.5" and the 4" screen sizes of the iPhone/iPod Touch (can have up to five screenshots and you must provide at least one)

Step 2:

Visit iTunes Connect and sign in with your iOS developer account, and click 'Manage Your Apps'.

Click the 'Add New App' in left and select iOS App, and fill out the Basic Information, Price and Availability and Metadata forms with all the information prepared in step 1.

Step 3:

Once your application's metadata is submitted, your apps status will change to 'Ready to Upload Binary'.

Then you need to create an archive of your application by configuring your target's build settings in Xcode with the distribution certificate and provisioning profile, and start building your application on a physical device. (  Xcode ---> Product ---> Archive )

Now an archive and Xcode's organizer should automatically open and show you the archive you just created.

Step 4: Validating and distributing binary

a)Select the archive from the list and click the Distribute button on the right.

b)From the options you are presented with, select Submit to the iOS App Store.

c) Enter your iOS developer account credentials.

d) Select the Application and Code Signing Identity.

       During this process, your application will also be validated. If an error occurs during the validation, the submission process will fail or else the application binary is uploaded to Apple's servers. 

( The validation process is very useful as it will tell you if there is something wrong with your application binary that would otherwise result in a rejection by the App Store review team)

If the submission process went without problems, your application's status will change to 'Waiting for Review'.

It takes some days for Apple to review your application.