Realme 7 vs Samsung Galaxy A51 5G UW: A Detailed Comparison for Gamers and 5G Users

The Realme 7 and Samsung Galaxy A51 5G UW represent distinct approaches to the mid-range smartphone market. The Realme 7 prioritizes gaming performance with its Mediatek Helio G95 chipset, while the A51 5G UW focuses on delivering 5G connectivity through the Qualcomm Snapdragon 765G. This comparison dissects their key differences to determine which device best suits your needs.
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🏆 Quick Verdict

For users prioritizing gaming and fast charging, the Realme 7 is the clear winner. Its Helio G95 chipset and 30W charging offer a superior experience. However, the Samsung Galaxy A51 5G UW is a compelling choice for those who value 5G connectivity and a more established brand ecosystem.

PHONES
Phone Names Realme 7 (Global) Samsung Galaxy A51 5G UW
Network
2G bandsGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 412, 4, 5, 13, 66
5G bands-260, 261 mmWave
SpeedHSPA, LTE-AHSPA, LTE, 5G
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE / 5G
Launch
Announced2020, October 072020, August 14
StatusAvailable. Released 2020, October 21Available. Released 2020, August 14
Body
BuildGlass front (Gorilla Glass 3), plastic back, plastic frameGlass front (Gorilla Glass 3), plastic back, aluminum frame
Dimensions162.3 x 75.4 x 9.4 mm (6.39 x 2.97 x 0.37 in)158.8 x 73.4 x 8.6 mm (6.25 x 2.89 x 0.34 in)
SIMDual SIM (Nano-SIM, dual stand-by)Nano-SIM (pre-installed)
Weight196.5 g (6.95 oz)188.8 g (6.67 oz)
Display
ProtectionCorning Gorilla Glass 3Corning Gorilla Glass 3
Resolution1080 x 2400 pixels, 20:9 ratio (~405 ppi density)1080 x 2400 pixels, 20:9 ratio (~405 ppi density)
Size6.5 inches, 102.0 cm2 (~83.4% screen-to-body ratio)6.5 inches, 102.0 cm2 (~87.5% screen-to-body ratio)
TypeIPS LCD, 90Hz, 480 nits (typ)Super AMOLED
Platform
CPUOcta-core (2x2.05 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver)
ChipsetMediatek Helio G95 (12 nm)Qualcomm SM7250 Snapdragon 765G 5G (7 nm)
GPUMali-G76 MC4Adreno 620
OSAndroid 10, Realme UIAndroid 10, One UI 2
Memory
Card slotmicroSDXC (dedicated slot)microSDXC (uses shared SIM slot)
Internal64GB 4GB RAM, 64GB 6GB RAM, 128GB 8GB RAM128GB 6GB RAM
 UFS 2.1UFS 2.1
Main Camera
FeaturesLED flash, HDR, panoramaLED flash, panorama, HDR
Quad48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.3, 119˚, 16mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth)48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 12 MP, f/2.2, 123˚ (ultrawide) 5 MP (macro) Auxiliary lens
Single-5 MP, AF
Video4K@30fps, 1080p@30/60/120fps, gyro-EIS4K@30fps, 1080p@30/120fps; gyro-EIS
Selfie camera
FeaturesPanoramaHDR
Single16 MP, f/2.1, 26mm (wide), 1/3.1", 1.0µm32 MP, f/2.2, 26mm (wide), 1/2.8", 0.8µm
Video1080p@30/120fps4K@30fps, 1080p@30fps
Sound
3.5mm jack YesYes
35mm jack-Yes
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE5.0, A2DP, LE
NFCYesYes
PositioningGPS, GLONASS, BDSGPS, GLONASS, GALILEO, BDS
RadioNoFM radio, RDS, recording
USBUSB Type-C 2.0, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compassFingerprint (under display, optical), accelerometer, gyro, proximity, compass
 -ANT+
Battery
Charging30W wired, 50% in 26 min, 100% in 65 min (advertised)15W wired
Stand-by-Up to 672 h
Talk time-Up to 5 h
TypeLi-Po 5000 mAh, non-removableLi-Po 4500 mAh
Misc
ColorsMist Blue, Mist WhitePrism Bricks Blue
ModelsRMX2155SM-A516V
PriceAbout 250 EURAbout 470 EUR
SAR-0.70 W/kg (head)     1.25 W/kg (body)    
SAR EU-0.59 W/kg (head)     1.32 W/kg (body)
Tests
Battery life Endurance rating 126h -
Camera Photo / Video-
Display Contrast ratio: 1474:1 (nominal)-
Loudspeaker -25.9 LUFS (Very good) -
Performance AnTuTu: 292828(v8) GeekBench: 1681 (v5.1) GFXBench: 17fps (ES 3.1 onscreen)-

Realme 7 (Global)

  • Faster 30W charging significantly reduces downtime.
  • Helio G95 offers strong gaming performance.
  • Higher contrast ratio (1474:1) for a more vibrant display.

  • Lacks 5G connectivity.
  • Camera specs are largely unknown.

Samsung Galaxy A51 5G UW

  • Integrated 5G modem for faster data speeds.
  • Qualcomm Snapdragon 765G offers better thermal efficiency.
  • Established Samsung brand and software ecosystem.

  • Significantly slower 15W charging.
  • Potentially lower CPU performance compared to the Helio G95.

Display Comparison

While both phones likely feature LCD panels (data not provided), the Realme 7 boasts a contrast ratio of 1474:1, suggesting deeper blacks and more vibrant colors compared to the A51 5G UW, which lacks this specification. The Realme 7’s display is likely tuned for gaming, potentially with a higher refresh rate (not specified), while the A51 5G UW’s display prioritizes efficient power consumption for 5G usage. Bezels and color accuracy are unknown, but the contrast ratio gives the Realme 7 an initial edge.

Camera Comparison

Detailed camera specs beyond 'Photo/Video' are missing for both devices. However, the market positioning suggests the Realme 7 may prioritize camera features geared towards social media, while the A51 5G UW likely focuses on all-around usability. Without sensor size or aperture information, it’s difficult to assess image quality. The presence of OIS (Optical Image Stabilization) would be a significant advantage for either device, particularly in low-light conditions. We can assume both phones include a variety of shooting modes, but the image processing style will likely differ, with Samsung typically favoring more saturated colors.

Performance

The core difference lies in the chipsets. The Realme 7’s Mediatek Helio G95 (12nm) utilizes a dual-cluster configuration with Cortex-A76 cores for peak performance, while the Samsung Galaxy A51 5G UW’s Snapdragon 765G (7nm) employs Kryo cores designed for a balance of performance and efficiency. The 7nm process of the Snapdragon 765G should offer better thermal efficiency, potentially reducing throttling during sustained workloads. However, the Helio G95’s Cortex-A76 cores provide a performance advantage in CPU-intensive tasks and gaming. The Snapdragon 765G’s integrated 5G modem is a significant advantage for users in 5G-covered areas.

Battery Life

The Realme 7’s 30W wired charging is a substantial advantage, promising a 50% charge in 26 minutes and 100% in 65 minutes. The A51 5G UW’s 15W charging is significantly slower. While the Realme 7’s battery capacity isn’t specified, its faster charging mitigates concerns about a potentially smaller battery. The A51 5G UW’s 5G modem will consume more power, potentially offsetting any battery capacity advantage it might have. The Realme 7’s endurance rating of 126h suggests excellent battery life, even with heavy usage.

Buying Guide

Buy the Realme 7 (Global) if you need a phone optimized for mobile gaming, demand rapid charging speeds, and prioritize raw processing power for the price. Buy the Samsung Galaxy A51 5G UW if you prefer a phone with 5G capabilities, a more refined software experience, and a brand known for its broader ecosystem of devices and support.

Frequently Asked Questions

❓ Will the Snapdragon 765G in the A51 5G UW overheat during extended gaming sessions?
The Snapdragon 765G's 7nm process is more thermally efficient than the Helio G95's 12nm process. While it won't match the raw performance of the Realme 7, it's less likely to experience significant throttling during prolonged gaming, offering a more consistent, albeit slightly lower, frame rate.
❓ Is the 5G connectivity on the A51 5G UW worth the trade-off in charging speed?
That depends on your location and data usage. If you live in an area with robust 5G coverage and frequently stream high-bandwidth content or download large files, the 5G connectivity is a significant benefit. However, if 5G is unavailable or you primarily use Wi-Fi, the Realme 7’s faster charging is likely more valuable.
❓ Does the Realme 7 support popular gaming titles like PUBG Mobile at high frame rates?
The Helio G95 chipset is specifically designed for gaming, and the Realme 7 should be capable of running PUBG Mobile at high frame rates (60fps) with optimized settings. However, sustained performance will depend on the phone's thermal management capabilities.