forward phone numbers with iphone

iphone 6
verizon united states cell phone

how can I forward all calls to another phone number

do I need to use verizon or can I use iphone (no jailbreak. I dont want viruses or errors with jailbreak).
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JohnBusiness Consultant (Owner)Commented:
Go to Settings, Phone, and Fowarding. Turn that on.
rgb192Author Commented:
Go to Settings, Phone,
There is "verizon services" but no forwarding option

but there is no
and Fowarding. Turn that on.
JohnBusiness Consultant (Owner)Commented:
?? There sure is on my iPhone.

Settings. move down to Phone, open Phone.

My Number
Announce Calls
Call Blocking
Wi Fi calling
Respond with Text.

Then Call Forwarding

Open Call Forwarding, Enable, enter number.

Please check again. I am on IOS 11.3
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Since you have Verizon, you can do this:

Calli *72 plus the forwarding phone number, including the area code (e.g., *72-555-555-5555). You will hear a confirmation message.

This works with all phones with Verizon service, not just iPhones.

Dial *73 to stop forwarding. You will get a tone or message.

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The distinction forwarding on the phone and by carrier, if the phone is off, forwarding goes to cell carrier voice mail.
Arnold's comment is very true. Your only other option would be to log into the My Verizon site and setting forwarding there.
On the Settings screen, tap Phone and then tap Call Forwarding.
    Tap to turn on Call Forwarding.
    Use the virtual keypad to enter the number where you want incoming calls to ring.
    Tap the Call Forwarding button to return to the main Call Forwarding screen.
@John @xtermie - the software can vary a bit by the carrier. That option is NOT available on Verizon US iPhones as the OP has mentioned.

I'm attaching a photo of the one that I have.
rgb192Author Commented:
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