Documentation and sample APK

README.md

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+# Android SMS Ping
+
+  - Does not require rooted device
+  - SMS will not be delivered as standard SMS
+
+## Description
+
+  - Payload looks like this: `byte[]{0x0A, 0x06, 0x03, (byte) 0xB0, (byte) 0xAF, (byte) 0x82, 0x03, 0x06, 0x6A, 0x00, 0x05}`
+  - Full SMS PDU looks like this: `03050020 01f61fe0c91246066833682000412 06050423f00000 0a0603b0af8203066a0005`
+    - Where first segment is SMSC (SMS Center), second is user-defined data SMS, last segment is payload specified in userspace
+    - Using this payload, remote mobile station (baseband) will not deliver or correctly process the SMS, will only provide ACK (delivery report)
+
+## Links
+
+  - 3GPP 23.040 (originally GSM 03.40) https://en.wikipedia.org/wiki/GSM_03.40
+  - 3GPP 23.038 (originally GSM 03.38) https://en.wikipedia.org/wiki/GSM_03.38
+
+## Usage
+
+  - Install from published APK
+    - link: https://github.com/itds-consulting/android-ping-sms/releases/download/untagged-620fce2951120adbd72b/ping-sms.apk
+  - Compile it yourself and install on Android connected device
+    - ./gradle clean installDebug