How to manage Primary Contact in Samsung Galaxy S5(SM-G900H)?

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a). From the home screen, tap on Apps as shown below :

b). Tap on Settings. Under it, tap on Safety Assistance icon as shown below :

c). Tap on Manage primary contacts and tap the plus icon as shown below :

d). Tap the option from where you want to select the contact details and then choose the Contact that you want to make as primary contacts as shown below :

e). After selecting the contacts, tap on Done as shown below :

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