On this page we compare specs HTC Tattoo 528 MHz ARM 11 with HTC Desire 820 Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53), we compare external dimensions, compare screens and performance, the amount of RAM and memory for storing media data, battery capacity and characteristics of photo cameras, compare the presence of various sensors and functions.
| Hardware and OS | HTC Tattoo | HTC Desire 820 |
|---|
| Operating system | Android 1.6 (Donut); Sense UI | Android 4.4.2 (KitKat), upgradable to 6.1 (Marshmallow); Sense UI 7 |
| Processor | 528 MHz ARM 11 | Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53) |
| Chipset | Qualcomm MSM7225 Snapdragon S1 | Qualcomm MSM8939 Snapdragon 615 (28 nm) |
| GPU | No | Adreno 405 |
| Internal memory | 256 MB RAM, 512 MB | 16 GB, 2 GB RAM |
| External memory | microSD (dedicated slot) | microSD, up to 256 GB (dedicated slot) |
| Display | HTC Tattoo | HTC Desire 820 |
|---|
| Type | TFT | LCD |
| Size | 2.8" inc | 5.5" inc |
| Resolution | 240 x 320 px | 720 x 1280 px |
| Protection | | Corning Gorilla Glass 3 |
| Touchscreen | resistive touchscreen | capacitive touchscreen |
| Screen-to-Body Ratio | 41.5% | 67.2% |
| Display area | 24.3 cm2 | 83.4 cm2 |
| Display aspect ratio | 4:3 (height:width) | 16:9 (height:width) |
| Pixel Density | 143 PPI | 267 PPI |
| Colors | 65K | 16M |
| Connectivity | HTC Tattoo | HTC Desire 820 |
|---|
| 2G Network | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G Network | | HSDPA 850 / 900 / 1900 / 2100 - EMEA, Asia |
| 4G Network | | LTE band 3(1800), 7(2600), 8(900), 20(800) - Europe |
| Wi-Fi | Wi-Fi 802.11 b/g | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, DLNA, hotspot |
| Network | GSM / HSPA | GSM / HSPA / LTE |
| SIM card | Mini-SIM | Nano-SIM |
| Bluetooth | 2.0, A2DP | 4.0, A2DP, aptX |
| Edge | Class 10 | Yes |
| GPRS | Class 10 | Yes |
| GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS |
| NFC | | Yes (optional) |
| Speed | HSPA 7.2/0.384 Mbps | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| USB | miniUSB | microUSB 2.0, USB Host |
| Camera | HTC Tattoo | HTC Desire 820 |
|---|
| Main camera | 3.15 MP, Single | 13 MP, Single |
| Specs | 3.15 MP | 13 MP, f/2.2, 28mm (wide), AF |
| Features | | LED flash, HDR |
| Video | CIF@15fps | 1080p@30fps, 720p@60fps |
| Selfie camera | | 8 MP, Single |
| Multimedia | HTC Tattoo | HTC Desire 820 |
|---|
| 3.5 mm Jack | Yes | Yes |
| Radio | Stereo FM radio, RDS | FM radio |
| Design | HTC Tattoo | HTC Desire 820 |
|---|
| Colors | Brown, White, Graphite, Black, Violet | Marble White, Tuxedo Grey, Santorini White, Milky-way Grey, Tangerine White, Saffron Grey, Flamingo Grey, Blue Misty, Monarch Orange |
| Dimensions | 106 x 55.2 x 14 mm | 157.7 x 78.7 x 7.7 mm |
| Weight | 113 g | 155 g |
| Battery | HTC Tattoo | HTC Desire 820 |
|---|
| Battery capacity | 1100 mAh, Removable Li-Ion | 2600 mAh, Non-removable Li-Po |
| Battery life | Stand by time- Up to 340 h (2G) / Up to 520 h (3G)
Talking time- Up to 6 h 30 min (2G) / Up to 5 h 40 min (3G)
| Stand by time- Up to 424 h (3G)
Talking time- Up to 22 h 24 min (3G)
|
| Other | HTC Tattoo | HTC Desire 820 |
|---|
| SAR | SAR - 1.25 W/kg (head), 1.74 W/kg (body) | |
| Release date | 2009, September | 2014, September |
| Sensors | Accelerometer, compass | Accelerometer, proximity, compass |
