SMS Content description columns

ContentDesc.java

Those are values for android 4.4.4 in S3 for Smasung S3.

V/ActivityManager$SmsObserver(17187): .onChange: SMS Send !!! timestamp: 1446649046654
V/ActivityManager$SmsObserver(17187): .onChange: _id and its value: 211
V/ActivityManager$SmsObserver(17187): .onChange: thread_id and its value: 7
V/ActivityManager$SmsObserver(17187): .onChange: address and its value: +48692631872
V/ActivityManager$SmsObserver(17187): .onChange: person and its value: null
V/ActivityManager$SmsObserver(17187): .onChange: date and its value: 1446649046654
V/ActivityManager$SmsObserver(17187): .onChange: date_sent and its value: 1446649022000
V/ActivityManager$SmsObserver(17187): .onChange: protocol and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: read and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: status and its value: -1
V/ActivityManager$SmsObserver(17187): .onChange: type and its value: 1
V/ActivityManager$SmsObserver(17187): .onChange: reply_path_present and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: subject and its value: null
V/ActivityManager$SmsObserver(17187): .onChange: body and its value: Vxxfhu
V/ActivityManager$SmsObserver(17187): .onChange: service_center and its value: +48602006073
V/ActivityManager$SmsObserver(17187): .onChange: locked and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: error_code and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: seen and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: deletable and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: sim_slot and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: sim_imsi and its value: null
V/ActivityManager$SmsObserver(17187): .onChange: hidden and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: group_id and its value: null
V/ActivityManager$SmsObserver(17187): .onChange: group_type and its value: null
V/ActivityManager$SmsObserver(17187): .onChange: delivery_date and its value: null
V/ActivityManager$SmsObserver(17187): .onChange: app_id and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: msg_id and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: callback_number and its value: null
V/ActivityManager$SmsObserver(17187): .onChange: reserved and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: pri and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: teleservice_id and its value: 0
V/ActivityManager$SmsObserver(17187): .onChange: link_url and its value: null
V/ActivityManager$SmsObserver(17187): .onChange: svc_cmd and its value: 0

I dont know the type of those values.

I found in android:

private static final String[] SMS_ONLY_COLUMNS =

139 { "address", "body", "person", "reply_path_present",
140 "service_center", "status", "subject", "type", "error_code" };
Which is located:
/packages/providers/TelephonyProvider/src/com/android/providers/telephony/MmsSmsProvider.java
and its available under android:

// These are the columns that appear only in the SMS message
// table.
private static final String[] SMS_ONLY_COLUMNS =
        { "address", "body", "person", "reply_path_present",
          "service_center", "status", "subject", "type", "error_code" };

and for sms:

So this parameter whic is indicating that message was read is provided by mms provider.
I checked and mmsSmsProvider java existr on androd since version 2.1, so it could be usefull.