Greetings. Slow alyvon

Hello there,

That's not good at all to have a slow iPhone! Let me help you, first of all backup your iPhone to iTunes and perform an ITunes Restore:

Get your device ready

1. Check that you have the latest version of iTunes on your Mac or PC. If you can't access a computer and your device still works, you can erase and restore your device without a computer.
2. If you want to save the information on your iPhone, iPad, or iPod, make a backup.
3. Go to Settings > [your name] > iCloud, then turn off Find My iPhone. For an unresponsive device or one that won't turn on, learn what to do. If you forgot your passcode, get help.

Restore your device to factory settings

1. Open iTunes on your Mac or PC. If you can't access a computer and your device still works, you can erase and restore your device without a computer.
2. Connect your iPhone, iPad, or iPod to your computer with the cable that came with your device.
3. If a message asks for your device passcode or to Trust This Computer, follow the onscreen steps. If you forgot your passcode, get help.
4. Select your iPhone, iPad, or iPod when it appears in iTunes. For an unresponsive device or one that won't turn on, learn what to do. Or get help if your device doesn't appear in iTunes.
5. In the Summary panel, click Restore [device].
   
6. Click Restore again to confirm. Then iTunes erases your device and installs the latest iOS or iPod software.
   
7. After your device restores to factory settings, it restarts. Now you can set it up as new.

Get help

• If you see an error message, learn what to do.
• Learn how to restore your device from a backup.

If you need more help, contact Apple Support.