Xin nhờ anh chị em giúp một lỗi rất lạ. Em chưa từng gặp bao giờ. Em có dùng APKEditor để decompile file System.apk. Rồi thay thế tệp tin res/value_vi/string.xml bằng string.xml khác được chỉnh sửa text nho nhỏ. 
Nhưng khi compile lại thì nó luôn báo rất nhiều lỗi Warning string ............... has no default translation. Xin anh cho em cho hỏi nó bị lỗi gì.
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Link file System.apk và string.xml đây ạ.
Mong anh chị em giúp đỡ.
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https://drive.google.com/open?id=1Me2UeW5_g4WcoX7QfbzmwqFulQwIb016
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-----Thông báo lỗi như thế này-----
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warning: string 'accessibility_service_no_apps_message' has no default translation.
warning: string 'accessibility_service_no_apps_title' has no default translation.
warning: string 'bluetooth_pairing_will_share_phonebook_no_call_history' has no default translation.
warning: string 'category_printers' has no default translation.
warning: string 'cell_broadcast_settings_summary' has no default translation.
warning: string 'credentials_install_bg' has no default translation.
warning: string 'credentials_install_gesture_prompt' has no default translation.
warning: string 'crypt_keeper_cooldown' has no default translation.
warning: string 'crypt_keeper_encrypt_summary' has no default translation.
warning: string 'date_time_date_format_title' has no default translation.
warning: string 'eth_dialog_title' has no default translation.
warning: string 'eth_ok' has no default translation.
warning: string 'experimental_webview' has no default translation.
warning: string 'experimental_webview_summary' has no default translation.
warning: string 'gesture_c_summary' has no default translation.
warning: string 'gesture_e_summary' has no default translation.
warning: string 'gesture_m_summary' has no default translation.
warning: string 'gesture_o_summary' has no default translation.
warning: string 'gesture_s_summary' has no default translation.
warning: string 'gesture_v_summary' has no default translation.
warning: string 'gesture_w_summary' has no default translation.
warning: string 'gesture_z_summary' has no default translation.
warning: string 'heads_up_enabled_title' has no default translation.
warning: string 'ims_toggle_summary' has no default translation.
warning: string 'launch_count_label' has no default translation.
warning: string 'lenovo_experience_btn_next' has no default translation.
warning: string 'lenovo_experience_dialog_cancel' has no default translation.
warning: string 'lenovo_experience_dialog_confirm' has no default translation.