Siemens A31 vs HTC U11
| Type | Bar (classic) | Touch |
| Waterproofness & dust-resistance |  | IP67 |
| Dimensions | 102.00 x 46.00 x 17.60 mm | 153.90 x 75.90 x 7.90 mm |
| Weight | 85.00 g | 169.00 g |
| Display size | - | 5.50" |
| Display | Color / CSTN 64k colors 128 x 128 px | Color / Super LCD 16M colors 1440 x 2560 px (5.50") 534 ppi |
| Display protection |   | Corning Gorilla Glass Buy screen protector
|
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 2G: 300 min. (5.0 h) | 3G: 1470 min. (24.5 h) 4G: 1470 min. (24.5 h) |
| Stand-by (max.) | 2G: 270 h. (11.3 days) | 3G: 336 h. (14.0 days) 4G: 336 h. (14.0 days) |
| Standard battery | Li-Ion 820 mAhBuy powerbank
| Li-Ion 3000 mAhBuy powerbank
|
| Quick battery charging | | Quick Charge 3.0 |
| Wireless battery charging | | |
| Internal memory | 1.5 MB | 64 GB, 128 GB |
| End-user memory | | 53.21 GB, 117.21 GB |
| RAM memory | | 4 GB, 6 GB |
| Memory cards | |  microSD, microSDHC, microSDXC up to 2000 GBBuy memory card |
| Operating system | - | Android 7.1 Nougat |
| Interface | - | Sense |
| Processor | - | Qualcomm Snapdragon 835 8998 |
| Processor clock | - | 2450 MHz |
| GPU | - | Adreno 540 |
| Touchscreen | | |
| SAR (10g) | 0,64 W/kg | |
| DualSIM | | |
| SIM cards standard | | SingleSIM(nanoSIM) |
| Other names | - | - |
| GSM frequencies | 900 1800 | 850 900 1800 1900 |
| UMTS | | 850 900 1900 2100 |
| LTE standard | | FDD LTE: 2600, 2100, 1800, 1700, 1500, 900, 850, 800, 700 TDD LTE: 2600, 2500, 2300, 1900 |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo sensor model | nd | Sony IMX362 |
| Photo matrix | nd | 12 Mpx |
| Resolution | nd | 4032x3024 px |
| Optical zoom | nd | |
| Flash | nd | 2x LED |
| Dual-colour LED flash | nd | 1+1 |
| Video resolution | nd | 3840x2160 px |
| Video formats | nd | H.263, H.264, H.265, MPEG4 - 30 fps |
| Additional | nd | AF, EIS, OIS, f/1.7 |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | nd | 16 Mpx |
| Resolution | nd | 4656x3496 px |
| Optical zoom | nd | |
| Flash | nd | |
| Dual-colour LED flash | nd | |
| Video resolution | nd | 1920x1080 px |
| Video formats | nd | H.263, H.264, H.265, MPEG4 - 30 fps |
| Additional | nd | f/2.0 |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | v1.2.1 | v2.0 |
| HSCSD | | |
| HSDPA | | 42.20 Mbit/s |
| HSUPA | | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | | 979.00 Mbit/s |
| LTE UP | | - |
| WIMAX+ | | |
| GPRS | class 8 | |
| EDGE | | |
| Bluetooth | | v4.2 |
| 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 | | v3.1 Type-C |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | v4.3 | |
| MMS | | |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | 2 |
| Audio Jack | | |
| HD Voice | | |
| Sound formats | | 3GP, AAC, FLAC, M4A, MID, MKV, MP4, OGG, WAV |
| Polyphony | 32 voices | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | MIDP 1.0 | 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 | | |