In depth comparison and review of Apple iPhone 7 and Samsung Galaxy A31. Compare sizes, cameras, batteries, memory, and other important specifications and features to easily choose the right phone for you. Our goal is to help you uncover differences between the products and find the phone that will best fit your needs.
| DESIGN AND DIMENSIONS | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| Product Type | Smartphone - refurbished | Smartphone | |
|---|---|---|---|
| Manufacturer Model Number | A1778 | SM-A315G/DS | |
| Form Factor | Touch | Touch | |
| Height | 138.3 mm | 159.3 mm | Samsung Galaxy A31 has greater height than Apple iPhone 7. |
| Width | 67.1 mm | 73.1 mm | Samsung Galaxy A31 has greater width than Apple iPhone 7. |
| Depth | 7.1 mm | 8.6 mm | Apple iPhone 7 is narrower than Apple iPhone 7. |
| Weight | 138 g | 185 g | Apple iPhone 7 is lighter than Apple iPhone 7. |
| Body Colour | Black | Prism crush black | |
| Body Material | 7000 Series aluminium | - | |
| Protection | Dustproof, splashproof, waterproof | - | |
| Waterproof (Water-resistant) | Yes | - | Apple iPhone 7 is waterproof. |
| IP rating | IEC 60529 IP67 | - | |
| SAR Value | 1.19 W/kg (head), 1.19 W/kg (body) | 1.68 W/kg (body), 0.488 W/kg (head) | |
| Connector Type | Lightning | USB Type-C - 24 pin USB-C Headset jack - mini-phone 3.5mm |
|
| SIM Card Type (Size) | Nano SIM | Nano SIM | |
| SIM Card Qty | Single-SIM | Dual-SIM |
| DISPLAY | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| Display Type | LCD display | OLED display | |
|---|---|---|---|
| Display Technology | Retina HD display with IPS technology | Super AMOLED | |
| Screen Size (Display Size) | 4.7" | 6.4" | Samsung Galaxy A31 has larger screen size than Apple iPhone 7. |
| Screen Resolution (Display Resolution) | 1334 x 750 pixels | 2400 x 1080 pixels | Samsung Galaxy A31 has better screen resolution than Apple iPhone 7. |
| Display Format | - | Full HD+ | |
| Pixel Density | 326 ppi | - | |
| Max Brightness | 625 cd/m² | - | |
| Colour Depth | - | 16.7 million colours | |
| Contrast Ratio | 1400:1 | - | |
| Display Features | Dual-domain pixels, Display Zoom, Reachability (screen shifting), Landscape Views | Night mode, Edge-to-Edge screen, Infinity U Display | |
| Display Protection (Screen Protector) | Fingerprint-resistant oleophobic coating | - |
| PROCESSOR | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| Processor Type (CPU) | Apple A10 Fusion | - | |
|---|---|---|---|
| Clock Speed | - | 2 GHz | |
| Processor Core Qty | - | 8-core | |
| 64-bit Architecture | Yes | - | Apple iPhone 7 has 64-bit architecture. |
| MEMORY | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| RAM | - | 4 GB | |
|---|---|---|---|
| Internal Memory Size (Storage Capacity) | 32 GB | 64 GB | Samsung Galaxy A31 has more internal memory than Apple iPhone 7. |
| User Memory | - | 46.2 GB | |
| Supported Flash Memory Cards (Expandable Memory) | - | microSDHC, microSDXC - up to 512 GB |
| CAMERA | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| MAIN CAMERA |
|---|
| Number of Main Cameras | 1 | 4 | |
|---|---|---|---|
| Sensor Resolution | 12 Megapixel | 48 Megapixel | Samsung Galaxy A31 has better camera resolution than Apple iPhone 7. |
| Sensor Type | BSI | - | |
| Lens Aperture | F/1.8 | F/2.0 | Apple iPhone 7 has better lens aperture than Apple iPhone 7. |
| Lens Construction | 6-element | - | |
| Field of View (FoV) | - | 80 degree(s) | |
| Optical Image Stabiliser (OIS) | Optical Image Stabiliser (OIS) | - | Apple iPhone 7 has optical stabilisation. |
| Focus Adjustment | Automatic | Automatic | |
| Digital Zoom | 5x | 8x | Samsung Galaxy A31 has better digital zoom than Apple iPhone 7. |
| HDR Mode | Auto HDR mode | - | |
| Camera Modes | Burst mode, Panorama, Time-lapse mode, Timer mode | Depth bokeh | |
| Face Recognition (Face ID) | Body and face detection | - | Apple iPhone 7 has face detection. |
| Light Source | Quad LED flash | LED flash | |
| Video Resolutions | 1920 x 1080 (1080p) at 30 fps, 1920 x 1080 (1080p) at 60 fps, 1280 x 720 (720p) at 30 fps, Slo-mo video 1920 x 1080 (1080p) at 120 fps, Slo-mo video 1280 x 720 (720p) at 240 fps, 3840 x 2160 (4K) at 30 fps | 1920 x 1080 (1080p) at 30 fps | |
| Camera Features (Functions) | Sapphire crystal lens cover, Focus Pixels, Hybrid IR filter, Exposure control, noise reduction, geotagging | Live Focus |
| SECOND CAMERA |
|---|
| Sensor Resolution (2nd Camera) | - | 8 Megapixel | |
|---|---|---|---|
| Lens Type (2nd Camera) | - | Ultra wide-angle lens | |
| Lens Aperture (2nd Camera) | - | F/2.2 | |
| Field of View (2nd Camera) | - | 123 degree(s) | |
| Minimum Focal Length (2nd Camera) | - | 40 mm | |
| Camera Functions (2nd Camera) | - | Macro camera |
| THIRD CAMERA |
|---|
| Sensor Resolution (3rd Camera) | - | 5 Megapixel | |
|---|---|---|---|
| Lens Aperture (3rd Camera) | - | F/2.4 | |
| Camera Functions (3rd Camera) | - | Depth camera |
| FOURTH CAMERA |
|---|
| Sensor Resolution (4th Camera) | - | 5 Megapixel | |
|---|---|---|---|
| Lens Aperture (4th Camera) | - | F/2.4 | |
| Camera Functions (4th Camera) | - | Depth camera |
| FRONT CAMERA |
|---|
| Number of Front Cameras | 1 | 1 | |
|---|---|---|---|
| Sensor Resolution (Front) | 7 Megapixel | 20 Megapixel | Samsung Galaxy A31 has better front camera resolution than Apple iPhone 7. |
| Sensor Type (Front) | BSI | - | |
| Lens Aperture (Front) | F/2.2 | F/2.2 | Both phones have the same front camera lens aperture. |
| Focus Adjustment | - | Focus free | |
| HDR Mode (Front) | Auto HDR mode | - | |
| Camera Modes (Front) | Burst mode, Timer mode | - | |
| Face Recognition (Face ID) | Body and face detection | - | Apple iPhone 7 has face detection. |
| Light Source (Front) | Retina Flash | - | |
| Video Resolutions (Front) | 1920 x 1080 (1080p) | - | |
| Camera Features (Front) | Exposure control, Auto image stabilisation | - |
| BATTERY AND CHARGING | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| Battery Capacity (Battery Size) | - | 5000 mAh | |
|---|---|---|---|
| Standby Time | 240 hours | - | |
| Talk Time | 840 minutes | 1980 minutes | Samsung Galaxy A31 has longer battery life when making calls than Apple iPhone 7. |
| Run Time Details | Talk (3G): up to 840 min Standby: up to 240 hrs Active online usage (3G): up to 12 hrs Active online usage (LTE): up to 12 hrs Active online usage (Wi-Fi): up to 14 hrs Playback (wireless video): up to 13 hrs Playback (wireless audio): up to 40 hrs |
Active online usage (LTE): up to 20 hrs Active online usage (Wi-Fi): up to 20 hrs Playback (video): up to 22 hrs Playback (audio): up to 97 hrs Talk (LTE): up to 1980 min |
|
| Battery Technology | Lithium Ion | - |
| CELLULAR | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| Technology | WCDMA (UMTS) / GSM | WCDMA (UMTS) / GSM | |
|---|---|---|---|
| Mobile Broadband Generation | 4G | 4G | Both phones have the same mobile network generation. |
| Operating System | iOS 10 | Android 10 | |
| User Interface | - | One UI | |
| Intelligent Assistant | Siri | - | |
| Payment Technology | Apple Pay | Samsung Pay | |
| Navigation | A-GPS, GLONASS | GPS, GLONASS, BeiDou, Galileo |
| COMMUNICATIONS | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| Data Transmission | GPRS, EDGE, EV-DO, HSUPA, HSPA+, LTE, DC-HSDPA, LTE Advanced, VoLTE, FDD-LTE, TDD-LTE | GPRS, EDGE, HSDPA, HSUPA, HSPA+, FDD-LTE, TDD-LTE | |
|---|---|---|---|
| 2G Band | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | 850 GSM, 900 GSM, 1800 GSM, 1900 GSM | |
| 3G UMTS Band | - | Band 1, Band 2, Band 4, Band 5, Band 8 | |
| 3G UMTS Frequency | - | 2100, 1900, 1700, 850, 900 | |
| 4G LTE Band | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 18, Band 19, Band 20, Band 25, Band 26, Band 27, Band 28, Band 29, Band 30, Band 38, Band 39, Band 40, Band 41 | Band 1, Band 2, Band 3, Band 4, Band 5, Band 7, Band 8, Band 12, Band 13, Band 17, Band 20, Band 28, Band 38, Band 40, Band 41, Band 66 | |
| 4G LTE Frequency | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 lower, FDD 800 upper, FDD 800 DD, FDD 1900+, FDD 850+, FDD 800 SMR, FDD 700 APT, FDD 700d, FDD 2300 WCS, TDD 2600, TDD 1900, TDD 2300, TDD 2500 | FDD 2100, FDD 1900 PCS, FDD 1800+, FDD 1700 - 2110 AWS, FDD 850, FDD 2600, FDD 900, FDD 700a, FDD 700c, FDD 700b, FDD 800 DD, FDD 700 APT, TDD 2600, TDD 2300, TDD 2500, FDD 1700 - 2110 AWS-3 | |
| Wireless Interface | IEEE 802.11a/b/g/n/ac | IEEE 802.11a/b/g/n/ac | |
| Bluetooth | Bluetooth 4.2 | Bluetooth 5.0 | |
| NFC | Yes | Yes | Both phones have an NFC reader for mobile payments. |
| Messaging Services | SMS, MMS | SMS, MMS |
| MEDIA | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| Supported Digital Audio Standards | WAV, AAC, AIFF, PCM, Audible, MP3, Apple Lossless, AAC-LC, HE-AAC, Audible AAX, Audible AAX+, protected AAC | WAV, WMA, AAC, AMR, MP3, FLAC, XMF, OGG, MIDI, M4A, MXMF, OGA, 3GA, AWB, IMY, RTTTL, RTX, OTA, MID | |
|---|---|---|---|
| Supported Digital Video Standards | AVI, MOV, M-JPEG, MPEG-4, H.264, M4V | MKV, FLV, AVI, MPEG-4, WMV, ASF, 3GP, M4V, WebM, 3G2 |
| FEATURES | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| Phone Functions | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | Speakerphone, voice control, call timer, conference call, flight mode, voice dialing, vibrating alert | |
|---|---|---|---|
| Sensors | Accelerometer, ambient light sensor, proximity sensor, 3-axis gyro sensor, digital compass, barometer | Accelerometer, ambient light sensor, proximity sensor, gyro sensor, hall sensor, geomagnetic sensor | |
| Security Devices | Fingerprint reader | Fingerprint reader (under display) | |
| Additional Phone Features | Multitasking, FaceTime, AirPlay wireless streaming, AirPrint wireless printing, iCloud Photo Sharing, AirDrop function, Apple TV support (2nd, 3rd), MIMO technology, Wi-Fi Calling, iBeacon microlocation, CarPlay function, Family Sharing feature, QuickType keyboard, Handoff, iCloud Keychain, Spotlight Search, Notification Center, M10 motion coprocessor, HomeKit, Night Shift | Samsung KNOX, Game Booster, Samsung Smart Switch, Virtual Proximity Sensing |
| OTHERS | Apple iPhone 7 | Samsung Galaxy A31 |
|---|
| Included Accessories | USB cable, power adapter, Apple EarPods with Lightning Connector | Power adapter | |
|---|---|---|---|
| Compliant Standards | IEC 60529 IP67, HAC (Hearing Aid Compatible) | - | |
| Max Operating Temperature | 35 °C | - | |
| Min Operating Temperature | 0 °C | - | |
| Humidity Range Operating | 5 - 95% (non-condensing) | - |
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