Contact your cell phone carrier and request to block a number. For example, if your iPhone data and voice plan is currently with AT&T, contact their customer support line to request a number to be blocked. This is the only method of blocking a number on the iPhone without Jailbreaking it.ontact your cell phone carrier and request to block a number. For example, if your iPhone data and voice plan is currently with AT&T, contact their customer support line to request a number to be blocked. This is the only method of blocking a number on the iPhone without Jailbreaking it.
All credits and deductions carry limits. Some carry a specific dollar limit. For example, the child tax credit cannot exceed $1,000 for each child. Other credits and deductions are limited by your income. For example, you can typically claim charitable deductions up to 50 percent of your adjusted gross income. Still other credits and deductions have specific limits for taxpayers whose adjusted gross income falls within certain ranges.
If you donât claim either of the education tax credits, you still have the option to deduct up to $4,000 of tuition and fees. The income limits for the tuition and fees deduction are $80,000 for single taxpayers and $160,000 for married couples filing jointly.he Child Tax Credit provides up to $1,000 for every child under 17 in your care if you meet certain income requirements. Those filing a joint return will see the amount of the credit begin to phase out if their adjusted gross income exceeds $110,000.