Realme 10 Pro+ vs Samsung Galaxy S21 FE 5G: A Deep Dive into Battery, Performance, and Value

The Realme 10 Pro+ and Samsung Galaxy S21 FE 5G represent compelling options in the mid-range smartphone market, but cater to different priorities. The S21 FE, originally a flagship, has seen price drops, while the Realme 10 Pro+ aims to deliver a strong feature set at a competitive price point. This comparison dissects their key differences, focusing on battery endurance, processing power, and overall value.
Phones Images

🏆 Quick Verdict

For the average user prioritizing battery life and fast charging, the Realme 10 Pro+ emerges as the winner. Its significantly longer endurance rating (149h vs 92h) and 67W charging are substantial advantages. However, the S21 FE’s Snapdragon 888 (or Exynos 2100) offers a performance edge for demanding tasks.

PHONES
Phone Names Realme 10 Pro+ Samsung Galaxy S21 FE 5G
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 38, 39, 40, 41, 66 - International1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 32, 38, 40, 41, 66 - International
5G bands1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA - International1, 3, 5, 8, 20, 28, 38, 40, 41, 66, 78 SA/NSA/Sub6 - International
SpeedHSPA, LTE, 5GHSPA 42.2/5.76 Mbps, LTE (5CA) Cat19 1600/200 Mbps, 5G
TechnologyGSM / CDMA / HSPA / CDMA2000 / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 -41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - USA
Launch
Announced2022, November 172022, January 04
StatusAvailable. Released 2022, November 24Available. Released 2022, January 07
Body
BuildGlass front, plastic frame, plastic backGlass front (Gorilla Glass Victus), plastic back, aluminum frame
Dimensions161.5 x 73.9 x 7.8 mm or 8 mm155.7 x 74.5 x 7.9 mm (6.13 x 2.93 x 0.31 in)
SIMNano-SIM + Nano-SIM· Nano-SIM· Nano-SIM + Nano-SIM
Weight173 g / 175 g (6.10 oz)177 g (6.24 oz)
 -IP68 dust/water resistant (up to 1.5m for 30 min)
Display
Protection-Corning Gorilla Glass Victus
Resolution1080 x 2412 pixels, 20:9 ratio (~394 ppi density)1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Size6.7 inches, 108.0 cm2 (~90.5% screen-to-body ratio)6.4 inches, 100.5 cm2 (~86.7% screen-to-body ratio)
TypeAMOLED, 1B colors, HDR10+, 120Hz, 800 nitsDynamic AMOLED 2X, 120Hz, HDR10+
 -Always-on display
Platform
CPUOcta-core (2x2.6 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) - version 1Octa-core (2x2.5 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) - version 2Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - Version 1Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - Version 2
ChipsetMediatek Dimensity 1080 (6 nm) - version 1Mediatek Dimensity 920 (6 nm) - version 2Qualcomm SM8350 Snapdragon 888 5G (5 nm) - Version 1Exynos 2100 (5 nm) - Version 2
GPUMali-G68 MC4 - version 1Mali-G68 MC4 - version 2Adreno 660 - Version 1Mali-G78 MP14 - Version 2
OSAndroid 13, Realme UI 4.0Android 12, up to 4 major Android upgrades, One UI 8
Memory
Card slotNoNo
Internal128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM
Main Camera
FeaturesLED flash, HDR, panoramaLED flash, auto-HDR, panorama
Single-32 MP, f/2.2, 26mm (wide), 1/2.74", 0.8µm
Triple108 MP, f/1.8, 24mm (wide), 1/1.67", 0.64µm, PDAF 8 MP, f/2.2, 16mm, 112˚ (ultrawide) 2 MP (macro)12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 8 MP, f/2.4, 76mm (telephoto), 1/4.5", 1.0µm, PDAF, OIS, 3x optical zoom 12 MP, f/2.2, 13mm, 123˚ (ultrawide), 1/3.0", 1.12µm
Video4K@30fps, 1080p@30/60/120/480fps, 720p@960fps, gyro-EIS4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, gyro-EIS
Selfie camera
FeaturesPanoramaHDR
Single16 MP, f/2.5, 25mm (wide)32 MP, f/2.2, 26mm (wide), 1/2.74", 0.8µm
Video1080p@30fps4K@30/60fps, 1080p@30/60fps, gyro-EIS
Sound
3.5mm jack -No
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 -32-bit/384kHz audio
Comms
Bluetooth5.2, A2DP, LE, aptX HD5.0, A2DP, LE
NFCYes (market/region dependent)Yes
PositioningGPS (L1+L5), GALILEO, GLONASS, BDS, QZSSGPS, GLONASS, BDS, GALILEO
RadioNoUnspecified
USBUSB Type-C 2.0USB Type-C, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-bandWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (under display, optical), accelerometer, gyro, proximity, compass
 -Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified) Samsung DeX (desktop experience support)
Battery
Charging67W wired, PD3.0, 50% in 17 min25W wired, PD3.0, 50% in 30 min 15W wireless Reverse wireless
Type5000 mAhLi-Ion 4500 mAh
Misc
ColorsDark Matter Black, Nebula Blue, HyperspaceWhite, Graphite, Lavender, Olive
ModelsRMX3687, RMX3686SM-G990B, SM-G990B/DS, SM-G990U, SM-G990U1, SM-G990W, SM-G990E, SM-G9900, SM-G990B2, SM-G990U2, SM-G990W2, SM-G990U3
PriceAbout 650 EUR€ 199.00 / $ 143.95 / £ 154.99 / ₹ 29,990
SAR-0.77 W/kg (head)     0.90 W/kg (body)
SAR EU-0.95 W/kg (head)     1.48 W/kg (body)
Tests
Battery life- Endurance rating 92h
Camera- Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker- -26.9 LUFS (Good)
Performance- AnTuTu: 566529 (v8), 719696 (v9) GeekBench: 3049 (v5.1) GFXBench: 56fps (ES 3.1 onscreen)

Realme 10 Pro+

  • Exceptional battery life (149h endurance)
  • Ultra-fast 67W charging
  • Modern and sleek design

  • Less powerful processor than the S21 FE
  • Lacks wireless charging

Samsung Galaxy S21 FE 5G

  • More powerful processor (Snapdragon 888/Exynos 2100)
  • Wireless and reverse wireless charging
  • Established brand reputation

  • Significantly shorter battery life (92h endurance)
  • Slower charging speed (25W)

Display Comparison

Both devices feature displays with comparable peak brightness, measured at 809 nits for the Realme 10 Pro+ and 792 nits for the Samsung Galaxy S21 FE 5G. While the S21 FE boasts an 'Infinite' contrast ratio (typical of AMOLED panels), the Realme’s display performance is still very competitive. The S21 FE’s display is likely to offer slightly more vibrant colors and deeper blacks due to its AMOLED technology, but the Realme’s LCD panel is still bright and clear. Bezels are similarly minimal on both devices, contributing to a modern aesthetic.

Camera Comparison

Both phones offer capable camera systems, but detailed sensor information is limited. Both are capable of Photo and Video capture. The Realme 10 Pro+’s camera system is likely focused on delivering strong image quality in various lighting conditions, while the S21 FE’s camera benefits from Samsung’s well-regarded image processing algorithms. Without specific sensor size and aperture details, it’s difficult to definitively declare a winner, but the S21 FE’s history suggests a more refined camera experience. We can assume the S21 FE has better video recording capabilities.

Performance

The performance landscape is more nuanced. The Samsung Galaxy S21 FE 5G ships with either the Qualcomm Snapdragon 888 (5nm) or the Exynos 2100 (5nm) depending on the region. Both are significantly more powerful than the Realme 10 Pro+'s Mediatek Dimensity 1080 (6nm). The Snapdragon 888, with its Cortex-X1 prime core clocked at 2.84 GHz (or 2.9 GHz in some versions), provides a noticeable performance boost in CPU-intensive tasks and gaming. However, the Dimensity 1080’s 6nm process offers improved efficiency, potentially leading to better sustained performance and less thermal throttling. The Realme 10 Pro+ also benefits from a newer architecture, though the raw clock speeds are lower (2.6 GHz Cortex-A78).

Battery Life

The Realme 10 Pro+ decisively wins in battery endurance, boasting a 149-hour rating compared to the S21 FE’s 92 hours. This translates to a significantly longer time between charges for typical users. Furthermore, the Realme 10 Pro+ supports 67W wired charging, achieving a 50% charge in just 17 minutes, while the S21 FE takes 30 minutes with its 25W charger. The S21 FE adds the convenience of 15W wireless charging and reverse wireless charging, features absent on the Realme 10 Pro+.

Buying Guide

Buy the Realme 10 Pro+ if you need exceptional battery life, incredibly fast charging, and a modern design without breaking the bank. It’s ideal for users who prioritize all-day usability and don’t necessarily require the absolute highest performance. Buy the Samsung Galaxy S21 FE 5G if you prefer a more established brand, a potentially more powerful processor (depending on the version), and features like wireless charging, even if it means sacrificing battery endurance and accepting a slower charging experience.

Frequently Asked Questions

❓ Does the Exynos 2100 chip in the S21 FE overheat during prolonged gaming sessions?
The Exynos 2100 variant of the S21 FE is known to run warmer than the Snapdragon 888 version, and some users have reported thermal throttling during extended gaming. While not a deal-breaker, it's a factor to consider if you're a heavy mobile gamer. The Dimensity 1080 in the Realme 10 Pro+ is likely to manage thermals better due to its 6nm process, though it won't match the raw performance of the Snapdragon 888.
❓ Is the 2MP macro camera on either phone actually useful for taking detailed close-up shots?
Generally, 2MP macro cameras on phones in this price range offer limited detail and image quality. They are often included for marketing purposes rather than providing a genuinely useful photography experience. You're better off using the main camera and cropping for close-up shots.
❓ Does the Realme 10 Pro+ support high frame rate gaming like 90fps in PUBG Mobile?
While the Dimensity 1080 is capable, achieving consistently high frame rates (90fps) in demanding games like PUBG Mobile will likely require lowering graphics settings. The Realme 10 Pro+ can handle the game, but don't expect maximum settings at maximum frame rates. The Snapdragon 888 in the S21 FE has a higher ceiling for sustained high frame rate gaming.
❓ Which phone is better for watching videos and streaming content?
Both phones offer excellent displays for media consumption. The S21 FE's AMOLED panel will provide richer colors and deeper blacks, enhancing the viewing experience, particularly in dark environments. However, the Realme 10 Pro+'s display is still bright and clear, and its longer battery life means you can enjoy more content on a single charge.