My iPad data usage has a credit balance. How do I use this credit when I want to recharge?

I know that iKeyMonitor can limit your child's time usage on iPad.
https://ikeymonitor.com/

unlock the data traffic through the settings of CELLULAR DATA and make sure there is credit in the SIM

settings, general, usage,

Hi Anonymous,
This might help you, just follow these:
1. Go to your iPad's home screen by clicking on the home button. Click on Settings to access your settings.
2. Go to General in Settings and click on Usage. This will allow you to manage your storage, as you'll see a list of what's stored on your iPad. Look at how much storage you have available. This will inform you how much you need to get rid of, but not too much because you still have plenty of space.
3. Click on Manage Storage to start managing your storage. See what apps you have and how much space they take up. If any apps take up a lot of space, and you don't need them any more, you know you need to delete them.

4. Delete unwanted apps. To delete an app: •Tap on the relevant app in the list. You will see the button Delete App. You will also see the app's size and its Documents and Data usage (including data cached for quick access).
•Tap on the Delete App button, and the app will be deleted. •Note that the apps that come pre-installed (such as the Music and Videos apps) cannot be deleted.
•Take care not to delete any apps you need, especially for work. Instead, make room for them by determining which apps you no longer use or want (such as games, PDFs or other items you've finished with).

When you've forgot the lock screen password of your iPad tablet, you get 6 tries of the password entering. After that, the only way you could do is restore you iPad to Factory Settings, which would then no doubt delete your data and files on iPad. The lost data and files would not be backed up on iTunes then. In such case, the only way you could recover data and files from locked iPad is to use 3rd-party data recovery software app. Forgot iPad Screen Lock Password How to Recover Data from Locked iPad

Ask the credit card company for a new credit card number

Download a Data Usage Monitoring app.

In general, an iPad doesn't have a trash at all. Since you don't have access to the file system, files cannot be user-modified or deleted, so a trash is not necessary. Further, apps will generaly take care of their own cache and data usage, so user interventions doesn't generally occur. If you are talking about mail, try using the usual delete functions while navigating the Trash folder and you should permanently delete the message.
Hope this helps, Alistair

Follow these steps to set up your new Cellular Data account :

1. Tap Settings > Cellular Data > View Account:




2. The Cellular Data Account management window loads. Enter information or select an option in the following sections and tap Next when you are finished:



http://km.support.apple.com/library/APPLE/SECRET_PRODUCTS/S_PROJECT_15/HT4157/HT4157--cellular_data_account-004-en.png


User Information Enter your first and last name and your phone number.
Login Information Enter an email address and a password. This creates an AT&T account, allowing you to log in to the account later to make changes or view your usage statistics.
Recurring Domestic Plan Options This allows you to choose the type of plan you want to use.
Payment & Billing Information Complete this section with the billing information you’d like to use to pay for your Cellular Data account.

You can tap "Use a different service address" if you're billing address is a P.O. Box or Rural Route, and enter an alternate address for your service address


http://km.support.apple.com/library/APPLE/SECRET_PRODUCTS/S_PROJECT_15/HT4157/HT4157--cellular_data_account_service_address-001-en.png


Note: You cannot use a P.O. Box or Rural Route for the service address. AT&T requires that you use a street address for the service address. Please see this Document from AT&T for more information.
3. The Terms of Service agreement loads. Take a minute to read this agreement. Tap Agree to continue.




http://km.support.apple.com/library/APPLE/SECRET_PRODUCTS/S_PROJECT_15/HT4157/HT4157--terms-002-en.png


4. The Payment Summary loads. This shows you a summary of the account and plan you have selected:
Note: You can also add an International data plan on this screen by tapping Add International Data, or you can access your account later to manage your plan options. If you need to use your iPad internationally, you must sign up for the international data plan while in the United States.
5. Tap Submit to complete the creation of your Cellular Data account. The Congratulations screen loads. This lets you know that your account has been created, and that AT&T is activating your iPad. Tap OK to finish and return to the Settings screen of your iPad Wi-Fi + 3G.

http://km.support.apple.com/library/APPLE/SECRET_PRODUCTS/S_PROJECT_15/HT4157/HT4157--congrats-002-en.png

Your iPad will notify you when your Cellular Data connection has been activated :

http://km.support.apple.com/library/APPLE/SECRET_PRODUCTS/S_PROJECT_15/HT4157/HT4157--data_plan_activated-001-en.png

While waiting for this activation, you can use your iPad Wi-Fi + 3G on Wi-Fi.



Additional Information Note: The Cellular Data account sign-up process is managed by AT&T. If you have questions, concerns, or problems with this sign-up process, please contact AT&T.
If you need to change or correct your email account information, please contact AT&T.
Note: A unique email address is required for your AT&T account. If you plan on setting up cellular data accounts for multiple iPads, you must use a different email address for each account.