iPhone 12 mini vs. OnePlus 9RT 5G: A Deep Dive into Compact Power and Fast Charging

The iPhone 12 mini and OnePlus 9RT 5G represent distinct philosophies in the smartphone market. The iPhone 12 mini, despite its age, remains a benchmark for compact flagships, while the OnePlus 9RT 5G prioritizes rapid charging and gaming performance. This comparison dissects their strengths and weaknesses to help you choose the right device.
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🏆 Quick Verdict

For most users, the OnePlus 9RT 5G offers a more compelling package. Its significantly faster 65W charging, coupled with the Snapdragon 888’s raw power, outweighs the iPhone 12 mini’s software ecosystem advantages. However, the iPhone 12 mini remains the king of one-handed usability.

PHONES
Phone Names Apple iPhone 12 mini OnePlus 9RT 5G
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 46, 48, 66, 71 - A21761, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41 - Global
5G bands1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78, 79, 260, 261 Sub6/mmWave - A21761, 3, 5, 8, 28, 40, 41, 78 SA/NSA - Global
SpeedHSPA, LTE, 5G, EV-DO Rev.A 3.1 MbpsHSPA 42.2/5.76 Mbps, LTE Cat18 1200/200 Mbps, 5G
TechnologyGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 77, 78, 79 Sub6 - A2398, A2399, A2400CDMA2000 1xEV-DO
Launch
Announced2020, October 132021, October 13
StatusAvailable. Released 2020, November 13Available. Released 2021, October 19
Body
BuildGlass front, glass back, aluminum frameGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Dimensions131.5 x 64.2 x 7.4 mm (5.18 x 2.53 x 0.29 in)162.2 x 74.6 x 8.3 mm (6.39 x 2.94 x 0.33 in)
SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight135 g (4.76 oz)198.5 g (7.02 oz)
 IP68 dust/water resistant (up to 6m for 30 min) Apple Pay (Visa, MasterCard, AMEX certified)-
Display
ProtectionCeramic Shield glassCorning Gorilla Glass 5
Resolution1080 x 2340 pixels, 19.5:9 ratio (~476 ppi density)1080 x 2400 pixels, 20:9 ratio (~397 ppi density)
Size5.4 inches, 71.9 cm2 (~85.1% screen-to-body ratio)6.62 inches, 106.3 cm2 (~87.9% screen-to-body ratio)
TypeSuper Retina XDR OLED, HDR10, Dolby Vision, 625 nits (HBM), 1200 nits (peak)AMOLED, 120Hz, HDR10+
 -Always-on display
Platform
CPUHexa-core (2x3.1 GHz Firestorm + 4x1.8 GHz Icestorm)Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55)
ChipsetApple A14 Bionic (5 nm)Qualcomm SM8350 Snapdragon 888 5G (5 nm)
GPUApple GPU (4-core graphics)Adreno 660
OSiOS 14.1, upgradable to iOS 26.1Android 11, upgradable to Android 13, OxygenOS 13
Memory
Card slotNoNo
Internal64GB 4GB RAM, 128GB 4GB RAM, 256GB 4GB RAM128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
 NVMeUFS 3.1
Main Camera
Dual12 MP, f/1.6, 26mm (wide), 1.4µm, dual pixel PDAF, OIS 12 MP, f/2.4, 13mm, 120˚ (ultrawide), 1/3.6"-
FeaturesDual-LED dual-tone flash, HDR (photo/panorama)Dual-LED flash, HDR, panorama
Quad-50 MP, f/1.8, 24mm (wide), 1/1.56”, 1.0µm, PDAF, OIS 16 MP, f/2.2, 14mm, 123˚ (ultrawide), 1/3.6", 1.0µm 2 MP (macro)
Single-16 MP, f/2.4, (wide), 1/3.06", 1.0µm
Video4K@24/25/30/60fps, 1080p@25/30/60/120/240fps, HDR, Dolby Vision HDR (up to 30fps), stereo sound rec.4K@30/60fps, 1080p@30/60/240fps, Auto HDR, gyro-EIS
Selfie camera
FeaturesHDRHDR
Single12 MP, f/2.2, 23mm (wide), 1/3.6", 1.0µm SL 3D, (depth/biometrics sensor)16 MP, f/2.4, (wide), 1/3.06", 1.0µm
Video4K@24/25/30/60fps, 1080p@25/30/60/120fps, gyro-EIS1080p@30fps, gyro-EIS
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
Comms
Bluetooth5.0, A2DP, LE5.2, A2DP, LE
NFCYesYes
PositioningGPS, GLONASS, GALILEO, QZSSGPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a)
RadioNoNo
USBLightning, USB 2.0USB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, hotspotWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Features
SensorsFace ID, accelerometer, gyro, proximity, compass, barometerFingerprint (under display, optical), accelerometer, gyro, proximity, compass
 Ultra Wideband (UWB) support-
Battery
ChargingWired, PD2.0, 50% in 30 min 15W wireless (MagSafe) 15W wireless (Qi2) - requires iOS 17.4 update65W wired, 100% in 29 min
TypeLi-Ion 2227 mAh (8.57 Wh)Li-Po 4500 mAh
Misc
ColorsBlack, White, Red, Green, Blue, PurpleHacker Black, Nano Silver, Blue
ModelsA2399, A2176, A2398, A2400, A2399, iPhone13,1MT2110, MT2111
Price$ 165.79 / C$ 268.99 / £ 155.00 / € 178.00About 590 EUR
SAR EU0.99 W/kg (head)     0.99 W/kg (body)-
Tests
Battery life Endurance rating 69h -
Camera Photo / Video-
Display Contrast ratio: Infinite (nominal)-
Loudspeaker -24.6 LUFS (Very good) -
Performance AnTuTu: 589616 (v8) GeekBench: 4174 (v5.1) GFXBench: 60fps (ES 3.1 onscreen)-

Apple iPhone 12 mini

  • Extremely compact and pocketable design
  • Seamless iOS ecosystem integration
  • Excellent video recording quality

  • Slower charging speeds
  • Lower peak performance compared to Snapdragon 888
  • Battery life is a compromise due to size

OnePlus 9RT 5G

  • Blazing-fast 65W wired charging
  • Powerful Snapdragon 888 processor
  • Potentially better value for money

  • Larger form factor than the iPhone 12 mini
  • Potential for thermal throttling under heavy load
  • OxygenOS software experience may not appeal to all

Display Comparison

The iPhone 12 mini boasts a high-quality display capable of reaching 627 nits of peak brightness, ensuring excellent visibility outdoors. While the OnePlus 9RT’s display specs aren’t provided, OnePlus typically prioritizes high refresh rates and color accuracy in this segment. The iPhone 12 mini’s infinite (nominal) contrast ratio, typical of OLED panels, delivers deep blacks and vibrant colors. The absence of refresh rate information for the 9RT means the iPhone 12 mini likely offers a smoother visual experience, though this is a trade-off against potential battery drain.

Camera Comparison

Both phones offer capable camera systems, but details are limited. The iPhone 12 mini’s camera is known for its computational photography prowess and excellent video recording capabilities. The OnePlus 9RT’s camera performance relies heavily on its image processing algorithms and sensor quality, which aren’t specified. Without sensor size or aperture information for the 9RT, it’s difficult to make a direct comparison. The iPhone’s established video quality and consistent performance give it an edge for content creators.

Performance

The core difference lies in the chipsets: Apple’s A14 Bionic (5nm) versus Qualcomm’s Snapdragon 888 5G (5nm). The A14 Bionic utilizes a hexa-core architecture (2x3.1 GHz Firestorm + 4x1.8 GHz Icestorm) optimized for efficiency and single-core performance. The Snapdragon 888, with its octa-core configuration (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55), focuses on multi-core performance and GPU capabilities. While the A14 Bionic is incredibly efficient, the Snapdragon 888 generally offers higher peak performance, particularly in graphically intensive games. However, the 5nm Snapdragon 888 is known to generate more heat, potentially leading to thermal throttling during sustained workloads, a concern the A14 Bionic mitigates.

Battery Life

The iPhone 12 mini’s endurance rating of 69 hours suggests reasonable battery life, but it’s a compromise given its compact size. The OnePlus 9RT 5G’s battery capacity is unknown, but its standout feature is the 65W wired charging, capable of reaching 100% in just 29 minutes. This is a massive advantage over the iPhone 12 mini’s slower wired charging (50% in 30 minutes) and 15W wireless charging (MagSafe/Qi2). The 9RT’s charging speed significantly reduces downtime, making it ideal for users who need a quick power boost.

Buying Guide

Buy the Apple iPhone 12 mini if you prioritize a truly pocketable form factor, seamless iOS integration, and long-term software support. You’ll appreciate its ease of use and the established Apple ecosystem. Buy the OnePlus 9RT 5G if you value blazing-fast charging, a more powerful processor for demanding tasks like gaming, and a generally lower price point. It’s the better choice for power users and those who frequently top up their phones.

Frequently Asked Questions

❓ Does the Snapdragon 888 in the OnePlus 9RT 5G overheat during extended gaming sessions?
The Snapdragon 888 is known to generate more heat than the A14 Bionic. While the OnePlus 9RT 5G likely incorporates cooling solutions, prolonged gaming at maximum settings could lead to thermal throttling, reducing sustained performance. Monitoring temperatures during gameplay is recommended.
❓ Is the iPhone 12 mini still receiving software updates?
Yes, the iPhone 12 mini continues to receive iOS updates from Apple, ensuring access to the latest features and security patches. Apple provides long-term software support for its devices, making it a reliable choice for users who prioritize software longevity.
❓ What wireless charging standards does the iPhone 12 mini support?
The iPhone 12 mini supports 15W wireless charging via MagSafe and Qi wireless charging. However, full Qi2 compatibility requires iOS 17.4 or later.
❓ How does the OnePlus 9RT 5G handle multitasking compared to the iPhone 12 mini?
The OnePlus 9RT 5G, with its Snapdragon 888 and potentially more RAM, generally handles multitasking more efficiently than the iPhone 12 mini, especially with numerous apps open simultaneously. The Snapdragon 888’s octa-core architecture is designed for handling multiple tasks concurrently.