TCL 4021 vs TCL 4042S
| Type | Bar (classic) | Bar (classic) |
| Dimensions | 114.80 x 47.28 x 12.70 mm | 137.48 x 57.50 x 13.65 mm |
| Weight | 76.00 g | 111.00 g |
| Display size | 1.77" | 2.80" |
| Display | Color / TFT 256k colors 128 x 160 px (1.77") 116 ppi | Color / TFT 256k colors 240 x 320 px (2.80") 143 ppi |
| Display protection |   | |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 391 min. (6.5 h) | 2G: 900 min. (15.0 h) 3G: 600 min. (10.0 h) 4G: 480 min. (8.0 h) |
| Stand-by (max.) | 2G: 324 h. (13.5 days) | 4G: 360 h. (15.0 days) |
| Standard battery | Li-Ion 1030 mAhBuy powerbank
| Li-Ion 1500 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 4 MB | 128 MB |
| End-user memory |  | 17 MB |
| RAM memory | 4 MB | 48 MB |
| Memory cards |  microSD, microSDHC up to 32 GBBuy memory card | microSD, microSDHC, microSDXC up to 128 GBBuy memory card |
| Operating system | - | Mocor |
| Processor | MediaTek MT6261D | Unisoc T107 UMS9117 |
| Processor clock | 260 MHz | 1000 MHz |
| GPU | - | - |
| DualSIM | | |
| SIM cards standard | DualSIM(microSIM, microSIM) | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | dual standby | dual standby |
| Hybrid DualSIM | | |
| Other names | OneTouch 4021 | OneTouch 4042S |
| GSM frequencies | 850 900 1800 1900 | 900 1800 1900 |
| UMTS | 2100 | 850 900 2100 |
| LTE standard | | FDD LTE: 2600, 2100, 1800, 900, 850, 800, 700 TDD LTE: 2600, 2500, 2300 |
| Standard 5G | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | Standard | Standard |
| Photo matrix | 0.08 Mpx | 0.3 Mpx |
| Resolution | 320x240 px | 640x480 px |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video resolution | 176x144 px | 320x240 px |
| Additional | FF | FF |
CAMERAS - FRONT
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | | |
| HSCSD | | |
| HSDPA | | 0.38 Mbit/s |
| HSUPA | | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | - |
| LTE UP | | - |
| WIMAX+ | | |
| GPRS | | class 12 |
| EDGE | | class 12 |
| Bluetooth | v2.1 | |
| A2DP Profile | | |
| HDMI | | |
| WiFi | | |
| WiFi frequencies | | |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | | |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Swype | | |
| e-mail client | | |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | | |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |