HTC Desire Z vs Nokia 3555
| Type | Slide | Clamshell |
| Dimensions | 119.00 x 60.40 x 14.16 mm | 99.60 x 44.30 x 20.50 mm |
| Weight | 180.00 g | 93.50 g |
| Display size | 3.70" | 1.80" |
| Display | Color / Super LCD 16M colors 480 x 800 px (3.70") 252 ppi | Color / TFT 128 x 160 px (1.80") |
| Display protection | Corning Gorilla Glass Buy screen protector
 |  |
| Additional display | | Mono / STN 98 x 65 px (1.00") |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 590 min. (9.8 h) 3G: 400 min. (6.7 h) | 2G: 180 min. (3.0 h) |
| Stand-by (max.) | 2G: 430 h. (17.9 days) 3G: 430 h. (17.9 days) | 2G: 240 h. (10.0 days) |
| Standard battery | Li-Ion 1300 mAhBuy powerbank
| Li-Ion 1050 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 1.5 GB | 30 MB |
| RAM memory | 512 MB |  |
| Memory cards |  microSD, microSDHC up to 32 GBBuy memory card | microSD up to 4 GBBuy memory card |
| Operating system | Android 2.2 Froyo | Nokia OS |
| Interface | Sense | Series 40 5th Edition |
| Processor | Qualcomm MSM7230 | - |
| Processor clock | 800 MHz | - |
| GPU | Adreno 205 | - |
| Touchscreen | | |
| SAR (10g) | | 0,95 W/kg |
| DualSIM | | |
| Other names | A7272; HTC Vision; T-Mobile G2 | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 900 2100 | 2100 |
| LTE standard | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 5 Mpx | 0.3 Mpx |
| Resolution | 2592x1944 px | 640x480 px |
| Optical zoom | | |
| Digital zoom | | 4x |
| Flash | LED | |
| Dual-colour LED flash | | |
| Video resolution | 1280x720 px | 176x144 px |
| Video formats | | H.263 - 12 fps |
| Additional | AF | - |
CAMERAS - FRONT
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | | v2.0 |
| HSCSD | | |
| HSDPA | 14.40 Mbit/s | |
| HSUPA | 5.76 Mbit/s | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | | class 10 |
| EDGE | | class 10 |
| Bluetooth | v2.1 EDR | v2.0 EDR |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 b/g/n | |
| WiFi frequencies | 2,4 GHz | |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 |
| GPS | | |
| A-GPS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | v1.2 |
| Dictionary | XT9 | T9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | z RDS | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | |
| HD Voice | | |
| Sound formats | AAC, AMR, M4A, OGG, WAV, WMA | AAC, AAC+, WMA, eAAC+ |
| Polyphony | | 64 voices |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | Dalvik | MIDP 2.1 |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |