UNDATED 9CNN) -- iPhone 4 users will be reimbursed for reception troubles.
Apple has settled a class-action lawsuit filed about the issue, promising to pay $15 or give a free case to everyone in the U.S. who owns the phone.
When the smartphone came out nearly two years ago, it was a huge seller. But some owners began complaining of frequently dropped calls.
Apple determined the antenna was the problem. At the time, users were offered a free case to fix the problem.
More than 21 million iPhone 4 owners are eligible for the payout.