No sound I have no sound on ringtones

Your phone uses sounds and vibrations to alert you, including ringtones, app notifications, alarms, and navigation feedback. You can customize any of these sounds, as well as control their volumes.

1. Change default ringtone for incoming calls

• Touch "Settings" icon from Home screen or under main menu.
• Touch "Sound".
• Touch "Phone ringtone." You will see a list of ringtones
• Touch a ringtone to select and hear it.
• Touch "OK" to confirm your final selection.

by going to settings and then sounds. But first you need to buy some ringtones or make some in itunes using instructions here.
http://www.idownloadblog.com/2013/05/16/how-to-create-ringtones-in-itunes/

Ringtones can be set for the whole phone in Settings-->Sounds-->Ringtone.

You can set a ringtone for each of your contacts by editing the contact in the Phone app or the Contacts app. When you touch the "Edit" button when viewing any individual contact, you can assign a specific ringtone and vibration, and text tone and vibration, to that contact.

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If you want to get how to change ringtones on iPhone 8, you can simply accomplish it on your iPhone 8. What you need to do is open your ringtone settings to set ringtones on iPhone 8. How to change ringtones on iOS 10? Let's see how.
1. To set ringtones on iPhone 8, you need to open the settings app.
2. Tap on "Sounds" and head to "SOUNDS AND VIBRATION PATTERNS", then press "Ringtones".
3. You will see a list of ringtones under "RINGTONES". Simply tap on the ringtone you want to change and you will see a tick before the ringtone name, which means you complete how to change ringtones on iOS 10.

For more details, check: How to Change Custom Ringtone on iPhone

First, tap on the "Sounds" icon in the Settings menu and review the list of different instances where a Ringtone can be set to play, clicking "ON" or "OFF" next to each to adjust the controls.
Now, tap on the "Ringtone" icon in the "Sounds" menu to see a list of your available Ringtones.
The default Ringtones available to you on the iPhone are generic ringing and beeping sounds.
Then, tap on any of these sounds to change your settings to play it as your primary Ringtone.

Send it to yourself in a picture message, then click save as ringtone.

Itautomatically goes to sounds, but you can still use these sounds as ringtones by going to sounds then options then use as ringtone.

Try this:
Under Get It Now, choose Music & Tones; then choose My Sounds.

Highlight the sound you want to use as a ringtone and send it to yourself. When you get the text message, choose the option "save as ringtone". Now you can use it as a ringtone.

I had the same problem. I hooked my phone back up to iTunes and synced my phone. Ringtone disappeared from phone, but remained in my computer's iTunes. Then I added it back to my phone through iTunes by syncing ringtones specifically. Here is step by step:
1. Plug in iPhone 2. Sync Phone 3. Click on iPhone, open Ringtones tab 4. Check "Sync ringtones" box and Select your Ringtone 5. Click Sync
This worked for my phone. Hope it helps. I used my phone to download ringtone.