Nokia 6121 Classic vs Nokia XR20
| Type | Bar (classic) | Touch |
| Waterproofness & dust-resistance |  | IP68 |
| Dimensions | 105.00 x 46.00 x 15.00 mm | 171.64 x 81.50 x 10.64 mm |
| Weight | 89.00 g | 248.00 g |
| Display size | 2.00" | 6.67" |
| Display | Color / TFT 16M colors 240 x 320 px (2.00") | Color / IPS TFT 16M colors 60 Hz 1080 x 2400 px (6.67") 395 ppi |
| Display protection |   | Corning Gorilla Glass Buy screen protector
|
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 180 min. (3.0 h) 3G: 140 min. (2.3 h) | |
| Stand-by (max.) | 2G: 230 h. (9.6 days) 3G: 230 h. (9.6 days) | |
| Standard battery | Li-Ion 890 mAhBuy powerbank
| Li-Ion 4630 mAhBuy powerbank
|
| Quick battery charging | | Quick Charge 4.0 |
| Wireless battery charging | | Qi |
| Internal memory | 35 MB | 64 GB, 128 GB |
| RAM memory | | 4 GB, 6 GB |
| Memory cards |  microSD | microSD, microSDHC, microSDXC up to 512 GBBuy memory card |
| Operating system | - | Android 11 |
| Interface | Series 60 3rd Edition | - |
| Processor | - | Qualcomm Snapdragon 480 |
| Processor clock | - | 2000 MHz |
| GPU | - | Adreno 619 |
| Touchscreen | | |
| SAR (10g) | 1,18 W/kg | |
| DualSIM | | |
| SIM cards standard | | SingleSIM(nanoSIM) |
| Announced | | 3Q 2021 |
| Other names | - | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 2100 | 850 900 1700 1900 2100 |
| LTE standard | | FDD LTE: 2600, 2100, 1900, 1800, 1700, 1500, 900, 850, 800, 700 TDD LTE: 3700, 3500, 2600, 2500, 2300, 1900 |
| Standard 5G | | FDD 5G: 2600, 2100, 1900, 1800, 1700, 850, 700 TDD 5G: 3700, 3500 |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | | Standard |
| Photo sensor model | | Samsung S5KGM1 |
| Photo matrix | 2 Mpx | 48 Mpx |
| Sensor size | | 1/2,25 |
| Pixel size | | 0,8 µm |
| Resolution | 1600x1200 px | |
| Optical zoom | | |
| Digital zoom | 4x | |
| Flash | LED | 3x LED |
| Dual-colour LED flash | | 1+2 |
| Video formats | | H.263, H.264, MPEG4 |
| Additional | - | AF, f/1.79 |
| Second camera | | |
| Camera type | nd | Wide-angle |
| Photo sensor model | nd | Samsung S5K3L6 |
| Photo matrix | nd | 13 Mpx |
| Sensor size | nd | 1/3 |
| Pixel size | nd | 1,12 µm |
| Optical zoom | nd | |
| Field of view | nd | 123 ° |
| Flash | nd | 3x LED |
| Dual-colour LED flash | nd | 1+2 |
| Video formats | nd | H.263, H.264, MPEG4 |
| Additional | nd | FF, f/2.4 |
CAMERAS - FRONT
| First camera | | |
| Camera type | | Portrait |
| Photo sensor model | | Samsung S5K4H7 |
| Photo matrix | 0.1 Mpx | 8 Mpx |
| Sensor size | | 1/4 |
| Pixel size | | 1,12 µm |
| Resolution | 352x288 px | |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video formats | nd | H.263, H.264, MPEG4 |
| Additional | - | FF, f/2.0 |
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 | | 21.10 Mbit/s |
| HSUPA | | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | 800.00 Mbit/s |
| LTE UP | | 210.00 Mbit/s |
| WIMAX+ | | |
| GPRS | | |
| EDGE | class 32 | |
| Bluetooth | | v5.1 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | | v802.11 a/b/g/n/ac/ax |
| WiFi frequencies | | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | | v3.0 Type-C |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| 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 | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | 2 |
| Audio Jack | | 3.5 mm |
| HD Voice | | |
| Sound formats | M4A, WMA, eAAC+ | AAC, AAC+, AMR, MID, WAV, eAAC+ |
| Polyphony | 64 voices | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | MIDP 2.0 | ART |
| 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 | | |