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.
There is no limit on the number of years for which you can claim a Lifetime Learning credit based on the same studentâs expenses. The Lifetime Learning credit is also non-refundable, whereas the American Opportunity is partially refundable. And it has a $2,000 maximum vs. $2,500. A taxpayer whose modified adjusted gross income is greater than $64,000 ($128,000 for joint filers) cannot claim the credit. 2  These limits are indexed to inflation and change annually. 3  School Eligibility: Available for all years of post-secondary education and for courses to acquire or improve job skills.