CAT B15 vs CAT B35
| Type | Touch | Bar (classic) |
| Waterproofness & dust-resistance | IP67 | IP68 |
| Dimensions | 125.00 x 69.50 x 14.95 mm | 138.00 x 60.00 x 13.90 mm |
| Weight | 170.00 g | 130.00 g |
| Display size | 4.00" | 2.40" |
| Display | Color / TFT 16M colors 480 x 800 px (4.00") 233 ppi | Color / TFT 256k colors 240 x 320 px (2.40") 167 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
 |  |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 960 min. (16.0 h) | 3G: 720 min. (12.0 h) |
| Stand-by (max.) | 2G: 624 h. (26.0 days) | 3G: 720 h. (30.0 days) |
| Standard battery | Li-Ion 2000 mAhBuy powerbank
| Li-Ion 2300 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 4 GB | 4 GB |
| RAM memory | 1 GB | 512 MB |
| Memory cards |  microSD, microSDHC up to 32 GBBuy memory card | microSD, microSDHC, microSDXC up to 128 GBBuy memory card |
| Operating system | Android 4.1 Jelly Bean | KaiOS 2.5 |
| Processor | MediaTek MT6577 | Qualcomm Snapdragon 205 8905 |
| Processor clock | 1000 MHz | 1100 MHz |
| GPU | PowerVR SGX531 @522 MHz | Adreno 304 |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard |  | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | | dual standby |
| Hybrid DualSIM | | |
| Announced | | 3Q 2018 |
| Other names | B15 AWS | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 1900 2100 | 850 900 1900 2100 |
| LTE standard | | FDD LTE: 2600, 2100, 1800, 900, 800 |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo matrix | 5 Mpx | 2 Mpx |
| Resolution | 2592x1944 px | 1600x1200 px |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video resolution | | 640x480 px |
| Video formats | H.263, H.264 | MPEG4, H.263, H.264 - 30 fps |
| Additional | AF | FF |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | 0.3 Mpx | nd |
| Resolution | 640x480 px | nd |
| Optical zoom | | nd |
| Flash | | nd |
| Dual-colour LED flash | | nd |
| Video formats | H.263, H.264 | 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 | 7.20 Mbit/s | 42.00 Mbit/s |
| HSUPA | 5.76 Mbit/s | 11.00 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | - |
| LTE UP | | 51.00 Mbit/s |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v3.0 | v4.1 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 b/g/n | v802.11 b/g/n |
| WiFi frequencies | 2,4 GHz | 2,4 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | XT9 | |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | |
| Audio Jack | 3.5 mm | 3.5 mm |
| HD Voice | | |
| Sound formats | AAC, AMR, APE, OGG, WAV | AAC, AAC+, AMR, FLAC, MIDI, OGG, OPUS, PCM |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | Dalvik | |
| 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 | | |