hi there i got my iphone screen broken and i did not backup my contacts, so how will i able to bring my all conntacts in my new other iphone

Open iTunes on your mac/ laptop and wait for it to recognize the broken iPhone, then click on the device icon on the top left of the screen. Select Summary from the left sidebar and choose “This computer” under Automatically Back Up. If necessary, check the box for “Encrypt local backup” to create a password to protect your backups.