Help Need Help In Vivo S1 1907 Baseband Version Unknown But imei OK So Please Give Me Solution

[All TECH 4 You]

Today In My Shop Come Vivo S1 1907 With Showing "No Service " When i check imei is Showing OK Again check in About phone than Baseband Unknown

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So Please tell Me What Problem Inside Software & Hardware.

Note:This mobile is doing HOT & Inside Have WTR MT6177W


Thanks & Regards By:All TECH 4 You