如果电话没有正常挂断，可以通过在Log中查找call failure case关键字来初步定位通话失败原因。

操作命令：

adb logcat -b radio | grep "call failure case"

正常挂断电话，一般会得到如下log：

E/RILQ (230):qcril_qmi_voice_all_call_status_ind_hdlr L4135:[0][event]call failure cause 0x91

如果call failure cause不是0x91则说明电话被非正常挂断，可以参考如下对照表，初步确定原因。

call failure cause值参考表

typedef enum {
  CALL_END_REASON_ENUM_MIN_ENUM_VAL_V02 = -2147483647, /**< To force a 32 bit signed enum.  Do not change or use*/
  CALL_END_CAUSE_OFFLINE_V02 = 0x00,
  CALL_END_CAUSE_CDMA_LOCK_V02 = 0x14,
  CALL_END_CAUSE_NO_SRV_V02 = 0x15,
  CALL_END_CAUSE_FADE_V02 = 0x16,
  CALL_END_CAUSE_INTERCEPT_V02 = 0x17,
  CALL_END_CAUSE_REORDER_V02 = 0x18,
  CALL_END_CAUSE_REL_NORMAL_V02 = 0x19,
  CALL_END_CAUSE_REL_SO_REJ_V02 = 0x1A,
  CALL_END_CAUSE_INCOM_CALL_V02 = 0x1B,
  CALL_END_CAUSE_ALERT_STOP_V02 = 0x1C,
  CALL_END_CAUSE_CLIENT_END_V02 = 0x1D,
  CALL_END_CAUSE_ACTIVATION_V02 = 0x1E,
  CALL_END_CAUSE_MC_ABORT_V02 = 0x1F,
  CALL_END_CAUSE_MAX_ACCESS_PROBE_V02 = 0x20,
  CALL_END_CAUSE_PSIST_N_V02 = 0x21,
  CALL_END_CAUSE_UIM_NOT_PRESENT_V02 = 0x22,
  CALL_END_CAUSE_ACC_IN_PROG_V02 = 0x23,
  CALL_END_CAUSE_ACC_FAIL_V02 = 0x24,
  CALL_END_CAUSE_RETRY_ORDER_V02 = 0x25,
  CALL_END_CAUSE_CCS_NOT_SUPPORTED_BY_BS_V02 = 0x26,
  CALL_END_CAUSE_NO_RESPONSE_FROM_BS_V02 = 0x27,
  CALL_END_CAUSE_REJECTED_BY_BS_V02 = 0x28,
  CALL_END_CAUSE_INCOMPATIBLE_V02 = 0x29,
  CALL_END_CAUSE_ACCESS_BLOCK_V02 = 0x2A,
  CALL_END_CAUSE_ALREADY_IN_TC_V02 = 0x2B,
  CALL_END_CAUSE_EMERGENCY_FLASHED_V02 = 0x2C,
  CALL_END_CAUSE_USER_CALL_ORIG_DURING_GPS_V02 = 0x2D,
  CALL_END_CAUSE_USER_CALL_ORIG_DURING_SMS_V02 = 0x2E,
  CALL_END_CAUSE_USER_CALL_ORIG_DURING_DATA_V02 = 0x2F,
  CALL_END_CAUSE_REDIR_OR_HANDOFF_V02 = 0x30,
  CALL_END_CAUSE_ACCESS_BLOCK_ALL_V02 = 0x31,
  CALL_END_CAUSE_OTASP_SPC_ERR_V02 = 0x32,
  CALL_END_CAUSE_IS707B_MAX_ACC_V02 = 0x33,
  CALL_END_CAUSE_ACC_FAIL_REJ_ORD_V02 = 0x34,
  CALL_END_CAUSE_ACC_FAIL_RETRY_ORD_V02 = 0x35,
  CALL_END_CAUSE_TIMEOUT_T42_V02 = 0x36,
  CALL_END_CAUSE_TIMEOUT_T40_V02 = 0x37,
  CALL_END_CAUSE_SRV_INIT_FAIL_V02 = 0x38,
  CALL_END_CAUSE_T50_EXP_V02 = 0x39,
  CALL_END_CAUSE_T51_EXP_V02 = 0x3A,
  CALL_END_CAUSE_RL_ACK_TIMEOUT_V02 = 0x3B,
  CALL_END_CAUSE_BAD_FL_V02 = 0x3C,
  CALL_END_CAUSE_TRM_REQ_FAIL_V02 = 0x3D,
  CALL_END_CAUSE_TIMEOUT_T41_V02 = 0x3E,
  CALL_END_CAUSE_INCOM_REJ_V02 = 0x66,
  CALL_END_CAUSE_SETUP_REJ_V02 = 0x67,
  CALL_END_CAUSE_NETWORK_END_V02 = 0x68,
  CALL_END_CAUSE_NO_FUNDS_V02 = 0x69,
  CALL_END_CAUSE_NO_GW_SRV_V02 = 0x6A,
  CALL_END_CAUSE_NO_CDMA_SRV_V02 = 0x6B,
  CALL_END_CAUSE_NO_FULL_SRV_V02 = 0x6C,
  CALL_END_CAUSE_MAX_PS_CALLS_V02 = 0x6D,
  CALL_END_CAUSE_UNKNOWN_SUBSCRIBER_V02 = 0x6E,
  CALL_END_CAUSE_ILLEGAL_SUBSCRIBER_V02 = 0x6F,
  CALL_END_CAUSE_BEARER_SERVICE_NOT_PROVISIONED_V02 = 0x70,
  CALL_END_CAUSE_TELE_SERVICE_NOT_PROVISIONED_V02 = 0x71,
  CALL_END_CAUSE_ILLEGAL_EQUIPMENT_V02 = 0x72,
  CALL_END_CAUSE_CALL_BARRED_V02 = 0x73,
  CALL_END_CAUSE_ILLEGAL_SS_OPERATION_V02 = 0x74,
  CALL_END_CAUSE_SS_ERROR_STATUS_V02 = 0x75,
  CALL_END_CAUSE_SS_NOT_AVAILABLE_V02 = 0x76,
  CALL_END_CAUSE_SS_SUBSCRIPTION_VIOLATION_V02 = 0x77,
  CALL_END_CAUSE_SS_INCOMPATIBILITY_V02 = 0x78,
  CALL_END_CAUSE_FACILITY_NOT_SUPPORTED_V02 = 0x79,
  CALL_END_CAUSE_ABSENT_SUBSCRIBER_V02 = 0x7A,
  CALL_END_CAUSE_SHORT_TERM_DENIAL_V02 = 0x7B,
  CALL_END_CAUSE_LONG_TERM_DENIAL_V02 = 0x7C,
  CALL_END_CAUSE_SYSTEM_FAILURE_V02 = 0x7D,
  CALL_END_CAUSE_DATA_MISSING_V02 = 0x7E,
  CALL_END_CAUSE_UNEXPECTED_DATA_VALUE_V02 = 0x7F,
  CALL_END_CAUSE_PWD_REGISTRATION_FAILURE_V02 = 0x80,
  CALL_END_CAUSE_NEGATIVE_PWD_CHECK_V02 = 0x81,
  CALL_END_CAUSE_NUM_OF_PWD_ATTEMPTS_VIOLATION_V02 = 0x82,
  CALL_END_CAUSE_POSITION_METHOD_FAILURE_V02 = 0x83,
  CALL_END_CAUSE_UNKNOWN_ALPHABET_V02 = 0x84,
  CALL_END_CAUSE_USSD_BUSY_V02 = 0x85,
  CALL_END_CAUSE_REJECTED_BY_USER_V02 = 0x86,
  CALL_END_CAUSE_REJECTED_BY_NETWORK_V02 = 0x87,
  CALL_END_CAUSE_DEFLECTION_TO_SERVED_SUBSCRIBER_V02 = 0x88,
  CALL_END_CAUSE_SPECIAL_SERVICE_CODE_V02 = 0x89,
  CALL_END_CAUSE_INVALID_DEFLECTED_TO_NUMBER_V02 = 0x8A,
  CALL_END_CAUSE_MPTY_PARTICIPANTS_EXCEEDED_V02 = 0x8B,
  CALL_END_CAUSE_RESOURCES_NOT_AVAILABLE_V02 = 0x8C,
  CALL_END_CAUSE_UNASSIGNED_NUMBER_V02 = 0x8D,
  CALL_END_CAUSE_NO_ROUTE_TO_DESTINATION_V02 = 0x8E,
  CALL_END_CAUSE_CHANNEL_UNACCEPTABLE_V02 = 0x8F,
  CALL_END_CAUSE_OPERATOR_DETERMINED_BARRING_V02 = 0x90,
  CALL_END_CAUSE_NORMAL_CALL_CLEARING_V02 = 0x91,
  CALL_END_CAUSE_USER_BUSY_V02 = 0x92,
  CALL_END_CAUSE_NO_USER_RESPONDING_V02 = 0x93,
  CALL_END_CAUSE_USER_ALERTING_NO_ANSWER_V02 = 0x94,
  CALL_END_CAUSE_CALL_REJECTED_V02 = 0x95,
  CALL_END_CAUSE_NUMBER_CHANGED_V02 = 0x96,
  CALL_END_CAUSE_PREEMPTION_V02 = 0x97,
  CALL_END_CAUSE_DESTINATION_OUT_OF_ORDER_V02 = 0x98,
  CALL_END_CAUSE_INVALID_NUMBER_FORMAT_V02 = 0x99,
  CALL_END_CAUSE_FACILITY_REJECTED_V02 = 0x9A,
  CALL_END_CAUSE_RESP_TO_STATUS_ENQUIRY_V02 = 0x9B,
  CALL_END_CAUSE_NORMAL_UNSPECIFIED_V02 = 0x9C,
  CALL_END_CAUSE_NO_CIRCUIT_OR_CHANNEL_AVAILABLE_V02 = 0x9D,
  CALL_END_CAUSE_NETWORK_OUT_OF_ORDER_V02 = 0x9E,
  CALL_END_CAUSE_TEMPORARY_FAILURE_V02 = 0x9F,
  CALL_END_CAUSE_SWITCHING_EQUIPMENT_CONGESTION_V02 = 0xA0,
  CALL_END_CAUSE_ACCESS_INFORMATION_DISCARDED_V02 = 0xA1,
  CALL_END_CAUSE_REQUESTED_CIRCUIT_OR_CHANNEL_NOT_AVAILABLE_V02 = 0xA2,
  CALL_END_CAUSE_RESOURCES_UNAVAILABLE_OR_UNSPECIFIED_V02 = 0xA3,
  CALL_END_CAUSE_QOS_UNAVAILABLE_V02 = 0xA4,
  CALL_END_CAUSE_REQUESTED_FACILITY_NOT_SUBSCRIBED_V02 = 0xA5,
  CALL_END_CAUSE_INCOMING_CALLS_BARRED_WITHIN_CUG_V02 = 0xA6,
  CALL_END_CAUSE_BEARER_CAPABILITY_NOT_AUTH_V02 = 0xA7,
  CALL_END_CAUSE_BEARER_CAPABILITY_UNAVAILABLE_V02 = 0xA8,
  CALL_END_CAUSE_SERVICE_OPTION_NOT_AVAILABLE_V02 = 0xA9,
  CALL_END_CAUSE_ACM_LIMIT_EXCEEDED_V02 = 0xAA,
  CALL_END_CAUSE_BEARER_SERVICE_NOT_IMPLEMENTED_V02 = 0xAB,
  CALL_END_CAUSE_REQUESTED_FACILITY_NOT_IMPLEMENTED_V02 = 0xAC,
  CALL_END_CAUSE_ONLY_DIGITAL_INFORMATION_BEARER_AVAILABLE_V02 = 0xAD,
  CALL_END_CAUSE_SERVICE_OR_OPTION_NOT_IMPLEMENTED_V02 = 0xAE,
  CALL_END_CAUSE_INVALID_TRANSACTION_IDENTIFIER_V02 = 0xAF,
  CALL_END_CAUSE_USER_NOT_MEMBER_OF_CUG_V02 = 0xB0,
  CALL_END_CAUSE_INCOMPATIBLE_DESTINATION_V02 = 0xB1,
  CALL_END_CAUSE_INVALID_TRANSIT_NW_SELECTION_V02 = 0xB2,
  CALL_END_CAUSE_SEMANTICALLY_INCORRECT_MESSAGE_V02 = 0xB3,
  CALL_END_CAUSE_INVALID_MANDATORY_INFORMATION_V02 = 0xB4,
  CALL_END_CAUSE_MESSAGE_TYPE_NON_IMPLEMENTED_V02 = 0xB5,
  CALL_END_CAUSE_MESSAGE_TYPE_NOT_COMPATIBLE_WITH_PROTOCOL_STATE_V02 = 0xB6,
  CALL_END_CAUSE_INFORMATION_ELEMENT_NON_EXISTENT_V02 = 0xB7,
  CALL_END_CAUSE_CONDITONAL_IE_ERROR_V02 = 0xB8,
  CALL_END_CAUSE_MESSAGE_NOT_COMPATIBLE_WITH_PROTOCOL_STATE_V02 = 0xB9,
  CALL_END_CAUSE_RECOVERY_ON_TIMER_EXPIRED_V02 = 0xBA,
  CALL_END_CAUSE_PROTOCOL_ERROR_UNSPECIFIED_V02 = 0xBB,
  CALL_END_CAUSE_INTERWORKING_UNSPECIFIED_V02 = 0xBC,
  CALL_END_CAUSE_OUTGOING_CALLS_BARRED_WITHIN_CUG_V02 = 0xBD,
  CALL_END_CAUSE_NO_CUG_SELECTION_V02 = 0xBE,
  CALL_END_CAUSE_UNKNOWN_CUG_INDEX_V02 = 0xBF,
  CALL_END_CAUSE_CUG_INDEX_INCOMPATIBLE_V02 = 0xC0,
  CALL_END_CAUSE_CUG_CALL_FAILURE_UNSPECIFIED_V02 = 0xC1,
  CALL_END_CAUSE_CLIR_NOT_SUBSCRIBED_V02 = 0xC2,
  CALL_END_CAUSE_CCBS_POSSIBLE_V02 = 0xC3,
  CALL_END_CAUSE_CCBS_NOT_POSSIBLE_V02 = 0xC4,
  CALL_END_CAUSE_IMSI_UNKNOWN_IN_HLR_V02 = 0xC5,
  CALL_END_CAUSE_ILLEGAL_MS_V02 = 0xC6,
  CALL_END_CAUSE_IMSI_UNKNOWN_IN_VLR_V02 = 0xC7,
  CALL_END_CAUSE_IMEI_NOT_ACCEPTED_V02 = 0xC8,
  CALL_END_CAUSE_ILLEGAL_ME_V02 = 0xC9,
  CALL_END_CAUSE_PLMN_NOT_ALLOWED_V02 = 0xCA,
  CALL_END_CAUSE_LOCATION_AREA_NOT_ALLOWED_V02 = 0xCB,
  CALL_END_CAUSE_ROAMING_NOT_ALLOWED_IN_THIS_LOCATION_AREA_V02 = 0xCC,
  CALL_END_CAUSE_NO_SUITABLE_CELLS_IN_LOCATION_AREA_V02 = 0xCD,
  CALL_END_CAUSE_NETWORK_FAILURE_V02 = 0xCE,
  CALL_END_CAUSE_MAC_FAILURE_V02 = 0xCF,
  CALL_END_CAUSE_SYNCH_FAILURE_V02 = 0xD0,
  CALL_END_CAUSE_NETWORK_CONGESTION_V02 = 0xD1,
  CALL_END_CAUSE_GSM_AUTHENTICATION_UNACCEPTABLE_V02 = 0xD2,
  CALL_END_CAUSE_SERVICE_NOT_SUBSCRIBED_V02 = 0xD3,
  CALL_END_CAUSE_SERVICE_TEMPORARILY_OUT_OF_ORDER_V02 = 0xD4,
  CALL_END_CAUSE_CALL_CANNOT_BE_IDENTIFIED_V02 = 0xD5,
  CALL_END_CAUSE_INCORRECT_SEMANTICS_IN_MESSAGE_V02 = 0xD6,
  CALL_END_CAUSE_MANDATORY_INFORMATION_INVALID_V02 = 0xD7,
  CALL_END_CAUSE_ACCESS_STRATUM_FAILURE_V02 = 0xD8,
  CALL_END_CAUSE_INVALID_SIM_V02 = 0xD9,
  CALL_END_CAUSE_WRONG_STATE_V02 = 0xDA,
  CALL_END_CAUSE_ACCESS_CLASS_BLOCKED_V02 = 0xDB,
  CALL_END_CAUSE_NO_RESOURCES_V02 = 0xDC,
  CALL_END_CAUSE_INVALID_USER_DATA_V02 = 0xDD,
  CALL_END_CAUSE_TIMER_T3230_EXPIRED_V02 = 0xDE,
  CALL_END_CAUSE_NO_CELL_AVAILABLE_V02 = 0xDF,
  CALL_END_CAUSE_ABORT_MSG_RECEIVED_V02 = 0xE0,
  CALL_END_CAUSE_RADIO_LINK_LOST_V02 = 0xE1,
  CALL_END_CAUSE_TIMER_T303_EXPIRED_V02 = 0xE2,
  CALL_END_CAUSE_CNM_MM_REL_PENDING_V02 = 0xE3,
  CALL_END_CAUSE_ACCESS_STRATUM_REJ_RR_REL_IND_V02 = 0xE4,
  CALL_END_CAUSE_ACCESS_STRATUM_REJ_RR_RANDOM_ACCESS_FAILURE_V02 = 0xE5,
  CALL_END_CAUSE_ACCESS_STRATUM_REJ_RRC_REL_IND_V02 = 0xE6,
  CALL_END_CAUSE_ACCESS_STRATUM_REJ_RRC_CLOSE_SESSION_IND_V02 = 0xE7,
  CALL_END_CAUSE_ACCESS_STRATUM_REJ_RRC_OPEN_SESSION_FAILURE_V02 = 0xE8,
  CALL_END_CAUSE_ACCESS_STRATUM_REJ_LOW_LEVEL_FAIL_V02 = 0xE9,
  CALL_END_CAUSE_ACCESS_STRATUM_REJ_LOW_LEVEL_FAIL_REDIAL_NOT_ALLOWED_V02 = 0xEA,
  CALL_END_CAUSE_ACCESS_STRATUM_REJ_LOW_LEVEL_IMMED_RETRY_V02 = 0xEB,
  CALL_END_CAUSE_ACCESS_STRATUM_REJ_ABORT_RADIO_UNAVAILABLE_V02 = 0xEC,
  CALL_END_CAUSE_SERVICE_OPTION_NOT_SUPPORTED_V02 = 0xED,
  CALL_END_CAUSE_BAD_REQ_WAIT_INVITE_V02 = 0x12C,
  CALL_END_CAUSE_BAD_REQ_WAIT_REINVITE_V02 = 0x12D,
  CALL_END_CAUSE_INVALID_REMOTE_URI_V02 = 0x12E,
  CALL_END_CAUSE_REMOTE_UNSUPP_MEDIA_TYPE_V02 = 0x12F,
  CALL_END_CAUSE_PEER_NOT_REACHABLE_V02 = 0x130,
  CALL_END_CAUSE_NETWORK_NO_RESP_TIME_OUT_V02 = 0x131,
  CALL_END_CAUSE_NETWORK_NO_RESP_HOLD_FAIL_V02 = 0x132,
  CALL_END_CAUSE_DATA_CONNECTION_LOST_V02 = 0x133,
  CALL_END_CAUSE_UPGRADE_DOWNGRADE_REJ_V02 = 0x134,
  CALL_END_CAUSE_SIP_403_FORBIDDEN_V02 = 0x135,
  CALL_END_CAUSE_NO_NETWORK_RESP_V02 = 0x136,
  CALL_END_CAUSE_UPGRADE_DOWNGRADE_FAILED_V02 = 0x137,
  CALL_END_CAUSE_UPGRADE_DOWNGRADE_CANCELLED_V02 = 0x138,
  CALL_END_CAUSE_SSAC_REJECT_V02 = 0x139,
  CALL_END_CAUSE_THERMAL_EMERGENCY_V02 = 0x13A,
  CALL_END_CAUSE_1XCSFB_SOFT_FAILURE_V02 = 0x13B,
  CALL_END_CAUSE_1XCSFB_HARD_FAILURE_V02 = 0x13C,
  CALL_END_CAUSE_CONNECTION_EST_FAILURE_V02 = 0x13D,
  CALL_END_CAUSE_CONNECTION_FAILURE_V02 = 0x13E,
  CALL_END_CAUSE_RRC_CONN_REL_NO_MT_SETUP_V02 = 0x13F,
  CALL_END_CAUSE_ESR_FAILURE_V02 = 0x140,
  CALL_END_CAUSE_MT_CSFB_NO_RESPONSE_FROM_NW_V02 = 0x141,
  CALL_END_CAUSE_BUSY_EVERYWHERE_V02 = 0x142,
  CALL_END_CAUSE_ANSWERED_ELSEWHERE_V02 = 0x143,
  CALL_END_CAUSE_RLF_DURING_CC_DISCONNECT_V02 = 0x144,
  CALL_END_CAUSE_TEMP_REDIAL_ALLOWED_V02 = 0x145,
  CALL_END_CAUSE_PERM_REDIAL_NOT_NEEDED_V02 = 0x146,
  CALL_END_CAUSE_MERGED_TO_CONFERENCE_V02 = 0x147,
  CALL_END_CAUSE_LOW_BATTERY_V02 = 0x148,
  CALL_END_REASON_ENUM_MAX_ENUM_VAL_V02 = 2147483647 /**< To force a 32 bit signed enum.  Do not change or use*/
}call_end_reason_enum_v02;

qcom平台分析通话失败原因