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HUAWEI P20 LITE DOCOMO TO GLOBAL SINGLE SIM TO DUAL SIMS ALL IN ONE BY SOFT4GSM.PK Video Manual  https://www.youtube.com/watch?v=oBm2y5sCNVM&list=PLiCB3HdvRHLR6R_Rtk5HSOXpd9bPJXGKl&index=6