HTC Desire Z vs HTC First
| Type | Slide | Touch |
| Dimensions | 119.00 x 60.40 x 14.16 mm | 126.00 x 65.00 x 8.89 mm |
| Weight | 180.00 g | 123.00 g |
| Display size | 3.70" | 4.30" |
| Display | Color / Super LCD 16M colors 480 x 800 px (3.70") 252 ppi | Color / Super LCD 16M colors 720 x 1280 px (4.30") 342 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
 | Corning Gorilla Glass Buy screen protector
|
| Additional display |  | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 590 min. (9.8 h) 3G: 400 min. (6.7 h) | 2G: 858 min. (14.3 h) |
| Stand-by (max.) | 2G: 430 h. (17.9 days) 3G: 430 h. (17.9 days) | 2G: 436 h. (18.2 days) |
| Standard battery | Li-Ion 1300 mAhBuy powerbank
| Li-Ion 2000 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 1.5 GB | 16 GB |
| RAM memory | 512 MB | 1 GB |
| Memory cards |  microSD, microSDHC up to 32 GBBuy memory card | |
| Operating system | Android 2.2 Froyo | Android 4.1 Jelly Bean |
| Interface | Sense | - |
| Processor | Qualcomm MSM7230 | Qualcomm Snapdragon 400 8930 |
| Processor clock | 800 MHz | 1400 MHz |
| GPU | Adreno 205 | Adreno 305 |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard |  | SingleSIM(microSIM) |
| Other names | A7272; HTC Vision; T-Mobile G2 | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 900 2100 | 850 900 1900 2100 |
| LTE standard | | FDD LTE: 1900, 850 |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 5 Mpx | 5 Mpx |
| Resolution | 2592x1944 px | 2592x1944 px |
| Optical zoom | | |
| Digital zoom | | 4x |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 1280x720 px | 1920x1080 px |
| Video formats | | H.263, H.264, MPEG4 |
| Additional | AF | AF, f/2.0 |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | nd | 1.6 Mpx |
| Optical zoom | nd | |
| Flash | nd | |
| Dual-colour LED flash | nd | |
| Video formats | nd | H.263, H.264, MPEG4 |
| Additional | nd | FF |
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 | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | | class 12 |
| EDGE | | class 12 |
| Bluetooth | v2.1 EDR | v4.0 LE |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 b/g/n | v802.11 a/b/g/n |
| WiFi frequencies | 2,4 GHz | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | XT9 | XT9 |
| 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 | 3.5 mm |
| HD Voice | | |
| Sound formats | AAC, AMR, M4A, OGG, WAV, WMA | AAC, AAC+, AMR, WMA |
| Polyphony | | 64 voices |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | Dalvik | Dalvik |
| Videophone | | |
| 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 | | |