Nokia X2 vs Nokia 6121 Classic
| Type | Bar (classic) | Bar (classic) |
| Dimensions | 111.00 x 47.00 x 13.30 mm | 105.00 x 46.00 x 15.00 mm |
| Weight | 82.00 g | 89.00 g |
| Display size | 2.20" | 2.00" |
| Display | Color / TFT 256k colors 240 x 320 px (2.20") 182 ppi | Color / TFT 16M colors 240 x 320 px (2.00") |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 810 min. (13.5 h) | 2G: 180 min. (3.0 h) 3G: 140 min. (2.3 h) |
| Stand-by (max.) | 2G: 540 h. (22.5 days) | 2G: 230 h. (9.6 days) 3G: 230 h. (9.6 days) |
| Standard battery | Li-Ion 860 mAhBuy powerbank
| Li-Ion 890 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 48 MB | 35 MB |
| RAM memory | 64 MB |  |
| Memory cards |  microSD, microSDHC up to 16 GBBuy memory card | microSD |
| Operating system | Nokia OS | - |
| Interface | Series 40 6th Edition | Series 60 3rd Edition |
| Touchscreen | | |
| SAR (10g) | 0,82 W/kg | 1,18 W/kg |
| DualSIM | | |
| Announced | 2Q 2010 | |
| Other names | X2-00 | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | | 2100 |
| LTE standard | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 5 Mpx | 2 Mpx |
| Resolution | 2592x1944 px | 1600x1200 px |
| Optical zoom | | |
| Digital zoom | 4x | 4x |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video resolution | 320x240 px | |
| Video formats | H.263, MPEG4 - 18 fps | |
| Additional | - | - |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | nd | 0.1 Mpx |
| Resolution | nd | 352x288 px |
| Optical zoom | nd | |
| Flash | nd | |
| Dual-colour LED flash | nd | |
| Additional | nd | - |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | v2.0 | v2.0 |
| HSCSD | | |
| HSDPA | | |
| HSUPA | | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | |
| LTE UP | | |
| WIMAX+ | | |
| GPRS | class 32 | |
| EDGE | class 32 | class 32 |
| Bluetooth | v2.1 EDR | |
| A2DP Profile | | |
| HDMI | | |
| WiFi | | |
| WiFi frequencies | | |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | |
| GPS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
Multimedia
| Radio | z RDS | |
| MP3 | | |
| Stereo speakers | 2 | |
| Audio Jack | 3.5 mm | |
| HD Voice | | |
| Sound formats | AAC, WMA, eAAC, eAAC+ | M4A, WMA, eAAC+ |
| Polyphony | 64 voices | 64 voices |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | MIDP 2.1 | MIDP 2.0 |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | v1.2 | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |