25: Troubleshooting in Objective-C

Draw Denso QR Bar Code in Objective-C 25: Troubleshooting

If none of these steps help, check out the Additional Troubleshooting and Help Resources section later in this chapter. If that doesn t help, then try to restore your iPad from a backup file using the steps found in the Restore Your iPad from a Backup section in the chapter. Finally, if that does not help, then contact the store or business that sold you your iPad for assistance.

You have this new, cool device, and let s say you go to the iTunes Store or the App Store. What if you receive an error message or you are not allowed to make a purchase What do you do now 1. Both stores require an active internet connection. Make sure you have either a Wi-Fi connection or a cellular data connection. Check out 4, Wi-Fi and 3G Connections, for assistance. Verify you have an active iTunes account. We show you how to setup a new iTunes account in the Create an iTunes Account section of 26: Bonus iTunes User Guide.

NOTE: If you are traveling to a country where iPads are not yet sold, then you may not have an on-device App Store or iTunes. If this is the case, you will need to purchase items using iTunes on your computer and sync them to your iPad.

Every iPad is associated with or tied to an iTunes account. That association allows you to purchase iTunes music and videos, and apps from your iPad. It is also that association that allows you to play music from your iTunes account on your computer on your iPad. Sometimes, your iPad might lose its registration and connection with iTunes. Usually, this is a very simple fix. Just connect your iPad to the computer via the USB cable and iTunes will walk you through the process of re-associating your iPad with your iTunes account. We show the detailed steps of how to do this in 1, Getting Started. If you have trouble registering your iPad through iTunes, then Apple provides an online resource that you can get to from your computer or iPad web browser. Type this into your web browser: https://register.apple.com/cgi-bin/WebObjects/GlobaliReg.woa You should see a screen similar to the one shown here (Figure 25 4).

1. 2.

Complete the information, enter your Apple ID and password, and click Continue. Select whether you are registering One product or More than one product. In this case, we chose One product (Figure 25 5).

1. Now, choose the category, product line, and product. In this case, we chose iPad category, iPad product line, and iPad Wi-Fi. This moved us through steps 2 4 at once (Figure 25 6).

Now you need to enter your iPad serial number and other information about how you will use the iPad.

TIP: To locate the serial number, connect your iPad to your computer and load up iTunes. Click your iPad in the left nav bar and click on Summary in the top nav bar. The serial number is at the top of the Summary screen, as shown in Figure 25 7.

Figure 25 7. Locating your iPad serial number in iTunes and Step 5 on Apple s online registration site

Occasionally, when you connect your iPad to your PC or Mac, your iPad may not be recognized in the iTunes screen. In the first screen, this is what you should see your iPad will be listed under DEVICES (Figure 25 8). In the second screen-shot, you will notice that there is no device shown, even though your iPad is connected to the computer.

Figure 25 8. Verifying your iPad is listed in the left nav bar in iTunes when connected to your computer

Check the battery charge of the iPad by looking at the battery level in the top right of the home screen. If you have let the battery run too far down, iTunes won t see it until the level of the battery rises a bit. If the battery is charged, try connecting the iPad to a different USB port on the computer. Sometimes, if you have always used one USB port for the iPad and switch it to another port, the computer won t see it. If this still does not fix the problem, try disconnecting the iPad and restarting the computer. Then, reconnect the iPad to the USB port. If this still does not work, download the latest update to iTunes or completely uninstall and re-install iTunes on the computer again. Just make sure if you choose this option that you back up all the information in iTunes.

3. 4.