Mobile phones > Nokia 6021 vs Nokia 6510 vs Nokia 6230i comparison
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| Design | |||
| Manufacture | Nokia | Nokia | Nokia |
| Model | 6021 | 6510 | 6230i |
| Form factor | Block | Block | Block |
| Weight | 88 gram | 84 gram | 99 gram |
| Size (HxWxD) | 106 x 44 x 20mm | 97 x 43 x 20mm | 103 x 44 x 20mm |
| Operating System | Series 40 | Other | Series 40 |
| Communication | |||
| Networks | 2G 900, 1800, 1900 | 2G 900, 1800 | 2G 900, 1800, 1900 |
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| Connectivity | |||
| HDMI out | |
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| MHL | |
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| Bluetooth | |
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| Bluetooth version | NA | NA | NA |
| DLNA | |
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| Glonass | |
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| Camera | |||
| 3.5 mm audio connector | |
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| Camera | |
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| Camera resolution | NA | NA | 1.3 |
| Image Stabilization | |
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| BSI sensor | |
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| Camera Flash/Light | |
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| Flash type | NA | NA | NA |
| Video recording | |
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| Video capture resolution | NA | NA | NA |
| Display | |||
| Second Camera | NA | NA | NA |
| Display size | 1.56 inches | 0 inches | 1.5 inches |
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| Colour display | |
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| Number of colours | 65,636 | NA | 65,536 |
| Display resolution (WxH) | 128 x 128 pixels | 65 x 96 pixels | 208 x 208 pixels |
| PPI | 116 | NA | 196 |
| Second Display | NA | NA | NA |
| Hardware | |||
| CPU | NA | NA | NA |
| GPU | NA | NA | NA |
| Memory | NA | NA | 32MB |
| Micro SIM | |
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| Multimedia | |||
| MP3 | |
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| Ringtones / Music file format | Polyphonic | 45 | Polyphonic |
| Java | |
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| Games | NA | NA | NA |
| FM Radio | |
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| Power management | |||
| Battery | 900 mAh | Li-Ion 750 mAh | NA |
| Standby time (h) | 320 | 350 | 300 |
| Talktime (m) | 180 | 260 | 300 |
| Features | |||
| Wireless Charging | |
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| Browser | NA | 1.2.1 | XHTML |
| Calendar | |
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| Voicedialing | |
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| IP Code | NA | NA | NA |
| Predictive text | |
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| RSS reader | |
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| Voicememo | |
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| PC Synchronization | |
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| SyncML | |
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| Website | Website | Website | Website |
| Price history |  Available | Available | |
| Remove | Remove | Remove | |