---
title: SMS Dictionary Key Constants
framework: IOBluetooth
role: collectionGroup
role_heading: API Collection
path: iobluetooth/sms-dictionary-key-constants
---

# SMS Dictionary Key Constants

Read the parts of an SMS message.

## Topics

### Sender Information

- [IOBluetoothPDUOriginatingAddress](iobluetooth/iobluetoothpduoriginatingaddress.md)
- [IOBluetoothPDUOriginatingAddressType](iobluetooth/iobluetoothpduoriginatingaddresstype.md)
- [IOBluetoothPDUServicCenterAddress](iobluetooth/iobluetoothpduserviccenteraddress.md)
- [IOBluetoothPDUServiceCenterAddressType](iobluetooth/iobluetoothpduservicecenteraddresstype.md)

### Message Information

- [IOBluetoothPDUProtocolID](iobluetooth/iobluetoothpduprotocolid.md)
- [IOBluetoothPDUUserData](iobluetooth/iobluetoothpduuserdata.md)
- [IOBluetoothPDUTimestamp](iobluetooth/iobluetoothpdutimestamp.md)
- [IOBluetoothPDUType](iobluetooth/iobluetoothpdutype.md)
- [IOBluetoothPDUEncoding](iobluetooth/iobluetoothpduencoding.md)

## See Also

### Receiving SMS Information

- [handsFree(_:incomingSMS:)](iobluetooth/iobluetoothhandsfreedevicedelegate/handsfree(_:incomingsms:).md)