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Inner speaker problem via OnePlus 7 Pro

  1. L1576260318089
    Cupcake Aug 10, 2020

    L1576260318089 , via OnePlus 7 Pro , Aug 10, 2020 :
    When I purchased 1plus7pro I got Oxygen os 9 with phone.aftr few days I updated os 9 to 10.from that time when I try to cal any1 phone inner speaker not hearing to othe person.i talked to custmrcare and they told me to downgrade os 10 to 9 from then onwards its hearing properly.but I lost lot of features from os 10.if I neeed os 10 I hav to use my phone loudspkr onnn.so plzzz how to solve this problem.i spent 50k for dis phone but I'm not at alll satisfied with voice call innr spekr problmmm.
     

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