How to solve LG L70 Headphone symbol notification problem ?

i've LG L70 phone i get headphone notification problem in my phone i can't talk on call without headphone and unplugged the headphone i can't hear any voice like outgoing ring , incoming call person voice but i plugged the headphone i hear voice clearly plzz help me i want to solve this problem but what can i do ? plzz Answer me ..

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