How to Fix VoLTE Issues on SO-02K

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SO-02K,After flashing LineageOS 17, 19, 20, 21, and 22, VoLTE does not work.Situation Description:​IMS Features enabledThe system automatically selects amss_fsg_china_mobile_cn_ims_tar.mbn.The phone cannot recognize the SIM card and shows “No SIM card”.IMS Features disabledThe SIM card is recognized normally.Calls work (2G), and mobile data works on 4G.IMS Features enabled + manually selecting amss_fsg_lilac_tar.mbnThe SIM card is recognized...Read more