To add imo contacts, follow these steps:

1. Open the imo app on your device.

2. Sign in to your imo account, or create a new account if you don't have one.

3. Once you're logged in, click ""Contacts list"" in the upper right corner 

or the ""+"" icon in the lower left corner of the screen.

4. Tap on the ""Add"" button, usually represented by a plus (+) sign.

5. You will be prompted to enter the contact's phone number 

or select them from your device's address book.

6. If you choose to enter the phone number manually, 

type it in the provided field and tap on the ""Add"" button.

7. If you prefer to select a contact from your address book, 

tap on the ""Address Book"" option and choose the desired contact.

8. Once you've added the contact, they will appear in your imo contacts list.

9. You can now start messaging or calling them through the imo app.

Remember, both you and the contact you want to add must have the imo app installed 

and be registered with imo to be able to connect with each other.