| Name: | 
Samsung Galaxy A31 | 
Samsung Galaxy A33 5G | 
Samsung Galaxy M33 |
| Dimensions: | 159,3 x 73,1 x 8,6 mm | 159,7 x 74 x 8,1 mm | 165,4 x 76,9 x 9,4 mm |
| Weight: | 185 g | 186 g | 215 g |
| QWERTY: | - | - | - |
| Keyboard standard: | - | - | - |
| Dual SIM: | Yes | - | - |
| GSM frequencies: | 850/900/1800/1900 | 850/900/1800/1900 | 850/900/1800/1900 |
| Standard UMTS: | 850/900/1700/1900/2100 | 850/900/1900/2100 | 850/900/1900/2100 |
| 5G: | - | Yes | Yes |
| Standard battery: | Li-Po 5000 mAh | Li-Ion 5000 mAh | Li-Ion 5000 mAh |
| Stand-by (max.): | - | - | - |
| Talk time (max.): | - | - | 4G: 44 h |
| Internal memory: | 64 GB, 128 GB (eMMC 5.1) | 128 GB, 256 GB | 128 GB (eMMC 5.1) |
| RAM memory: | 4 GB, 6 GB (LPDDR4) | 6 GB, 8 GB | 6 GB, 8 GB (LPDDR4) |
| Memory cards: | microSD, microSDHC, microSDXC (do 512 GB) | microSD, microSDHC, microSDXC (do 1 TB) | microSD, microSDHC, microSDXC (do 1 TB) |
| Operating system: | Android 10 | Android 12 | Android 12 |
| User Interface: | One UI | One UI 4.1 | One UI 4.1.1 |
| Processor: | MediaTek Helio P65 MT6768 | Samsung Exynos 1280 S5E8825 | Samsung Exynos 1280 S5E8825 |
| Main display: | Super AMOLED 16M colors 1080 x 2400 px (6.40″) 411 ppi | Super AMOLED 16M colors, 90 Hz, 1080 x 2400 px (6.40″) 411 ppi | IPS TFT 16,7M colors, 120 Hz, 1080 x 2408 px (6.60″) 400 ppi |
| Screen-to-body: | 84.9 % | 83.7 % | 82.5 % |
| Touchscreen: | Yes | Yes | Yes |
| Digital camera: | 48 Mpx | 48 Mpx, 8000x6000 px | 50 Mpx, 3840x2160 |
| Secondary camera: | 20 Mpx | 13 Mpx | 8 Mpx |
| Flash: | Yes, LED | Yes, LED | Yes, LED |
| Video: | H.263, H.264, MPEG4 - 30 fps | H.263, H.264, H.265, MPEG4 | H.264, H.265, MPEG4 - 30 fps |
| MP3: | Yes | Yes | Yes |
| Radio: | - | - | - |
| Dictionary: | Yes, T9 | Yes, T9 | Yes, T9 |
| EMS: | - | - | - |
| MMS: | Yes | Yes | Yes |
| Speakerphone: | Yes | Yes | Yes |
| Voice dial: | Yes | Yes | Yes |
| Call forwarding: | Yes | Yes | Yes |
| e-mail clien: | Yes | Yes | Yes |
| IrDA: | - | - | - |
| Bluetooth: | Yes, v5.0 | Yes, v5.1 | Yes, v5.1 |
| GPRS: | Yes | Yes | Yes |
| EDGE: | Yes | Yes | Yes |
| WiFi: | Yes, v802.11 a/b/g/n/ac | Yes, v802.11 a/b/g/n/ac | Yes, v802.11 a/b/g/n/ac |
| WAP: | Yes, v2.0 | Yes, v2.0 | Yes, v2.0 |
| xHTML: | Yes | Yes | Yes |
| HSCSD: | - | - | - |
| HSDPA: | Yes, 42.20 Mbit/s | Yes, 42.20 Mbit/s | Yes, 42.20 Mbit/s |
| HSUPA: | Yes, 5.76 Mbit/s | Yes, 5.76 Mbit/s | Yes, 5.76 Mbit/s |
| HSPA: | Yes, 42.20 Mbit/s | Yes, 42.20 Mbit/s | Yes, 42.20 Mbit/s |
| HSPA+: | Yes | Yes | Yes |
| LTE: | Yes | Yes | Yes |
| USB: | Yes, v2.0 OTG Type-C | Yes, v2.0 OTG Type-C | Yes, v2.0 OTG Type-C |
| GPS: | Yes | Yes | Yes |
| Push To Talk: | - | - | - |
| Java: | Yes, ART | Yes, ART | Yes, ART |
| Calendar: | Yes | Yes | Yes |
| Watch: | Yes | Yes | Yes |
| Recorder: | Yes | Yes | Yes |
| Organizer: | - | - | - |
| Alarm: | Yes | Yes | Yes |
| Stopwatch: | Yes | Yes | Yes |
| Timer: | - | - | - |
| To-do List: | Yes | Yes | Yes |
| Notebook: | - | - | - |
| Calculator: | Yes | Yes | Yes |
| Profile: | - | - | - |
| Polyphony: | Yes | Yes | Yes |
| Link: | Samsung Galaxy A31 | Samsung Galaxy A33 5G | Samsung Galaxy M33 |
| Manual: | Manual Samsung Galaxy A31 | Manual Samsung Galaxy A33 5G | Manual Samsung Galaxy M33 |
