I Kall K25 vs Samsung Galaxy A40
| Type | Bar (classic) | Touch |
| Dimensions | - | 144.40 x 69.20 x 7.90 mm |
| Weight |  | 140.00 g |
| Display size | 1.80" | 5.90" |
| Display | Color / TFT 64k colors 128 x 160 px (1.80") 114 ppi | Color / Super AMOLED 16M colors 1080 x 2340 px (5.90") 443 ppi |
| Display protection |   | Corning Gorilla Glass Buy screen protector
|
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | | 3G: 1080 min. (18.0 h) |
| Playback time (max.) | nd | Audio: 62 h (2.6 days) Video: 14 h (0.6 days) |
| Internet browsing time (max.) | nd | WiFi: 11 h (0.5 days) 3G: 9 h (0.4 days) 4G: 11 h (0.5 days) |
| Standard battery | Li-Ion 1000 mAhBuy powerbank
| Li-Ion 3100 mAhBuy powerbank
|
| Quick battery charging | | Fast Charging |
| Wireless battery charging | | |
| Internal memory | 64 MB | 64 GB |
| End-user memory | | 49.4 GB |
| RAM memory | 32 MB | 4 GB |
| Memory cards |  microSD, microSDHC up to 8 GBBuy memory card | microSD, microSDHC, microSDXC up to 512 GBBuy memory card |
| Operating system | - | Android 9.0 Pie |
| Processor | - | Samsung Exynos 7904 |
| Processor clock | - | 1800 MHz |
| GPU | - | ARM Mali-G71 MP2 |
| Touchscreen | | |
| SAR (10g) | | 1,34 W/kg |
| DualSIM | | |
| SIM cards standard | DualSIM(microSIM, microSIM) | SingleSIM(nanoSIM) |
| DualSIM mode | dual standby | nd |
| Hybrid DualSIM | | nd |
| Announced | | 1Q 2019 |
| Other names | - | SM-A405F |
| GSM frequencies | 900 1800 | 850 900 1800 1900 |
| UMTS | | 850 900 1900 2100 |
| LTE standard | | FDD LTE: 2600, 2100, 1800, 900, 850, 800 TDD LTE: 2600, 2500, 2300 |
| Standard 5G | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | Standard | |
| Photo matrix | 0.3 Mpx | 16 Mpx |
| Resolution | 640x480 px | 4608x3456 px |
| Optical zoom | | |
| Digital zoom | | 4x |
| Flash | | LED |
| Dual-colour LED flash | | |
| Video resolution | | 1920x1080 px |
| Video formats | | H.263, H.264, MPEG4 - 30 fps |
| Additional | FF | f/1.7 |
| Second camera | | |
| Photo matrix | nd | 5 Mpx |
| Optical zoom | nd | |
| Flash | nd | LED |
| Dual-colour LED flash | nd | |
| Video formats | nd | H.263, H.264, MPEG4 - 30 fps |
| Additional | nd | f/2.2 |
CAMERAS - FRONT
| First camera | | |
| Camera type | Portrait | |
| Photo matrix | 0.3 Mpx | 25 Mpx |
| Resolution | 640x480 px | |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video formats | | H.263, H.264, MPEG4 - 30 fps |
| 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 |
| HSCSD | | |
| HSDPA | | 42.20 Mbit/s |
| HSUPA | | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | 603.00 Mbit/s |
| LTE UP | | - |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | | v5.0 LE |
| A2DP Profile | | |
| HDMI | | |
| WiFi | | v802.11 a/b/g/n/ac |
| WiFi frequencies | | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 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 | XT9 |
| Swype | | |
| e-mail client | | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | z RDS |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Sound formats | | 3GA, AAC, AMR, AWB, FLAC, IMY, M4A, MID, MIDI, MXMF, OGA, OGG, OTA, RTTTL, RTX, WAV, WMA, XMF |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Java | | 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 | | |