After more than 15 years covering everything Apple, it’s with a heavy heart we announce that we will no longer be publishing new content on iMore and the iMore forums will be closing as of November 1st, 2024.
not much information to go on. What, exactly, is it doing or not doing? As said, try a hard reset.
Hold the top power/sleep button and the home button at the same time until the Apple logo appears, then release.
If that doesn't work, take it to an Apple Store or Carrier Store.