Here's a side-by-side comparison of my old HP rw6828 and my new HTC TyTN II.

  HP iPAQ rw6828 HTC TyTN II
Processor Intel® PXA270 Processor 416MHz Qualcomm® MSM 7200, 400MHz
Operating System Windows Mobile 5.0 Windows Mobile® 6 Professional
Memory 45MB available for persistent user storage 64MB SDRAM for running applications ROM: 256MB RAM: 128MB SDRAM
Dimension 102mm (L) x 58mm (W) x 19.5mm (D) 112 mm (L) X 59 mm (W) X 19 mm (D)
Weight 140g 190g with battery
Display 56 x 56mm (2.205 x 2.205 inches) transflective TFT QVGA color, 240 x 240 pixels,0.24mm dot pitch, 64K-color support, portrait and landscape support with touch screen 2.8 inch, 240 X 320 QVGA TFT-LCD display with adjustable angle and backlight
Network GSM, GPRS, EDGE HSDPA/UMTS: Tri-band 850, 1900, 2100 MHz HSDPA: Up to 384kbps for upload and 3.6Mbps for download
UMTS: Up to 384kbps for upload and download
GSM/GPRS/EDGE: Quad-band 850, 900, 1800, 1900 MHz (The device will operate on frequencies available from the cellular network)
Device Control   Finger scrolling and panning 5-Way navigation control
Keyboard None Slide-out QWERTY keyboard
Connectivity Class II device; up to 4 dBm transmit, typical 10 meter range (approximately 33 feet) - High-speed, low-power, short-range wireless communication with other Bluetooth devices Serial IrDA SIR, data transfer up to 115.2 Kb per second, USB 1.1 Client - support via HP standard mini-USB cable 802.11b (WEP and WPA) Bluetooth® 2.0 Wi-Fi®: IEEE 802.11 b/g (WEP, WPA, WPA2) HTC ExtUSB™ (11-pin mini-USB and audio jack in one) GPS antenna connector
Camera Built-in UXVGA 1.3MP with LED light, 1280 x 1024 resolution, JPEG and 3GP format, support for still image, and video playback, H.263 Main camera: 3 megapixel CMOS color camera with auto focus Second camera: VGA CMOS color camera
Audio Integrated microphone, receiver, speaker and one 2.5mm stereo headphone jack, MP3 stereo (through headphone jack) Handsfree speakerphone Built-in microphone and speaker
Ringtone formats Simple MIDI Type 0, WMA, WAV, MP3, polyphonic MIDI MP3, AAC, AAC+, WMA, WAV, and AMR-NB. 40 polyphonic and standard MIDI format 0 and 1(SMF)/SP MIDI
Headset 2.5mm jack with single earbud style headset (mute and volume control) mini-USB connector
Battery Removable/rechargeable 1200 mAh, 3.7 Volt, Lithium polymer battery 1,350 mAh rechargeable Li-polymer battery
Standby time:
* Up to 350 hours for UMTS
* Up to 365 hours for GSM

Talk time:
* Up to 264 minutes for UMTS
* Up to 420 minutes for GSM
* Up to 120 minutes for video call
Expansion Slot Supports mini SD memory standard microSD™ memory card (SD 2.0 compatible)

Interesting things I've noticed so far:

  • While the new phone uses the "ExtUSB" port to connect the headset (meaning it should never get stuck), this does mean you can't charge or dock the device and listen on the headset at the same time.
  • The HTC device happily continues to play audio even when it loses the phone signal - my HP had this annoying "feature" that most times when I was travelling on a train through a tunnel, it would pause Media Player.
  • There's no volume control on the headset. Fortunately the headset does seem much more comfortable and clearer than the HP one.
  • The HTC memory card seems a lot faster to access.