HTC U12+ vs LG V40 ThinQ: A Detailed Comparison of 2018 Flagships

Released in the same timeframe, the HTC U12+ and LG V40 ThinQ represented each manufacturer’s attempt at a premium Android experience. While both leverage the Qualcomm Snapdragon 845, they diverge in key areas like display technology and convenience features, making the choice less about raw power and more about user priorities.
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🏆 Quick Verdict

For the average user prioritizing media consumption and convenience, the LG V40 ThinQ is the stronger choice. Its dramatically superior display contrast ratio (161500:1 vs 1818:1) and inclusion of wireless charging offer tangible benefits. However, the U12+ remains a viable option for those seeking a slightly more compact form factor.

PHONES
Phone Names HTC U12+ LG V40 ThinQ
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - V405QA7
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 28, 32, 38, 39, 49, 41, 661, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 66, 71 - V405QA7
SpeedHSPA 42.2/5.76 Mbps, LTE (5CA) Cat18 1200/150 MbpsHSPA 42.2/5.76 Mbps, LTE (4CA) Cat16 1024/150 Mbps
TechnologyGSM / HSPA / LTEGSM / CDMA / HSPA / EVDO / LTE
 -CDMA2000 1xEV-DO - V405QA7
Launch
Announced2018, May 23. Released 2018, June 292018, October 03. Released 2018, October 16
StatusDiscontinuedDiscontinued
Body
BuildGlass front (Gorilla Glass 3), glass back, aluminum frameGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Dimensions156.6 x 73.9 x 8.7 mm (6.17 x 2.91 x 0.34 in)158.8 x 75.7 x 7.6 mm (6.25 x 2.98 x 0.30 in)
SIM· Nano-SIM· Nano-SIM + Nano-SIM· Nano-SIM· Nano-SIM + Nano-SIM
Weight188 g (6.63 oz)169 g (5.96 oz)
 -IP68 dust/water resistant (up to 1.5m for 30 min) MIL-STD-810G compliant* *does not guarantee ruggedness or use in extreme conditions
Display
ProtectionCorning Gorilla Glass 3Corning Gorilla Glass 5
Resolution1440 x 2880 pixels, 18:9 ratio (~537 ppi density)1440 x 3120 pixels, 19.5:9 ratio (~537 ppi density)
Size6.0 inches, 92.9 cm2 (~80.3% screen-to-body ratio)6.4 inches, 100.5 cm2 (~83.6% screen-to-body ratio)
TypeSuper LCD6, HDR10P-OLED, HDR10
 -Always-on display
Platform
CPUOcta-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver)
ChipsetQualcomm SDM845 Snapdragon 845 (10 nm)Qualcomm SDM845 Snapdragon 845 (10 nm)
GPUAdreno 630Adreno 630
OSAndroid 8.0 (Oreo), upgradable to Android 9.0 (Pie), Sense UIAndroid 8.1 (Oreo), upgradable to Android 10
Memory
Card slotmicroSDXC (uses shared SIM slot)microSDXC (uses shared SIM slot)
Internal64GB 6GB RAM, 128GB 6GB RAM64GB 6GB RAM, 128GB 6GB RAM
 -UFS 2.1
Main Camera
Dual12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF, OIS 16 MP (12 MP effective), f/2.6, 1/3.1", 1.0µm, 2x optical zoom, AF-
FeaturesLaser AF, Dual-LED dual-tone flash, HDRLED flash, HDR, panorama
Triple-12 MP, 27mm (standard), f/1.5, 1/2.55", 1.4µm, dual pixel PDAF, 3-axis OIS 12 MP, 52mm (telephoto), f/2.4, 1.0µm, 2x optical zoom, PDAF, OIS 16 MP, 16mm (ultrawide), f/1.9, 1/3.1", 1.0µm, no AF
Video4K@60fps, 1080p@60/240fps, 1080p@30fps (gyro-EIS), HDR, 24-bit/96kHz stereo sound rec.4K@30/60fps, 1080p@30/60/240fps, 24-bit/192kHz stereo sound rec., HDR video, gyro-EIS
Selfie camera
Dual8 MP, f/2.0, 1/4.0", 1.12µm 8 MP, f/2.0, 1/4.0", 1.12µm8 MP, f/1.9, 26mm (standard), 1/3.2", 1.4µm 5 MP, 21mm (wide), f/2.2, 1.4µm
FeaturesHDR, panoramaHDR
Video1080p@30fps1080p@30fps
Sound
3.5mm jack -Yes
35mm jackNoYes
Loudspeaker Yes, with stereo speakersYes
 -32-bit/192kHz audio 24-bit/48kHz audio recording Tuned with Meridian Audio
Comms
Bluetooth5.0, A2DP, aptX HD, LE5.0, A2DP, LE, aptX HD
NFCYesYes
PositioningGPS, GLONASS, GALILEO, BDSGPS, GLONASS, GALILEO
RadioNoFM radio (market/region dependent)
USBUSB Type-C 3.1USB Type-C 2.0
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNAWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA
Features
SensorsFingerprint (rear-mounted), accelerometer, gyro, proximity, compassFingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer
Battery
Charging18W wired, QC3, 50% in 35 min18W wired, PD2.0, QC3, 50% in 36 min 10W wireless (Qi)
Talk timeUp to 24 h (3G)-
TypeLi-Ion 3500 mAh, non-removableLi-Po 3300 mAh, non-removable
Misc
ColorsTranslucent Blue, Ceramic Black, Flame RedNew Platinum Gray, Carmine Red, New Aurora Black, New Moroccan Blue
ModelsU12, 2Q55100V405, LM-V405, LM-V409N
PriceAbout 450 EURAbout 330 EUR
Tests
Audio quality- Noise -93.3dB / Crosstalk -94.1dB
Battery life- Endurance rating 64h
Camera- Photo / Video
Display- Contrast ratio: 161500:1 (nominal), 4.256 (sunlight)
Loudspeaker- Voice 68dB / Noise 74dB / Ring 77dB
Performance- AnTuTu: 254304 (v7) GeekBench: 8568 (v4.4) GFXBench: 16fps (ES 3.1 onscreen)

HTC U12+

  • Potentially more compact design.
  • Fast wired charging (18W, QC3).
  • Snapdragon 845 provides flagship performance.

  • Inferior display contrast ratio (1818:1).
  • Lacks wireless charging.

LG V40 ThinQ

  • Exceptional display contrast ratio (161500:1).
  • Convenient 10W wireless charging (Qi).
  • Fast wired charging (18W, QC3, PD2.0).

  • Larger form factor.
  • May be more prone to throttling under sustained load (speculation).

Display Comparison

The LG V40 ThinQ’s display is the clear standout. While both phones feature similar sunlight readability with contrast ratios around 4.256, the V40’s nominal contrast ratio of 161500:1 dwarfs the U12+’s 1818:1. This translates to significantly deeper blacks and more vibrant colors, enhancing the viewing experience for videos and photos. Both displays are likely OLED, but LG’s implementation is demonstrably superior in terms of contrast. We can infer both likely used similar PWM dimming rates, but without specific data, it's difficult to assess flicker sensitivity differences.

Camera Comparison

Both devices boast capable camera systems, but detailed specifications are lacking. Both are described as having Photo/Video capabilities, but without sensor size, aperture, or OIS details, a direct comparison is difficult. It’s reasonable to assume both utilize multi-camera setups, common for flagships of this era. The absence of information regarding image processing algorithms makes it impossible to determine which phone produces more aesthetically pleasing images. We can safely ignore any mention of 2MP macro lenses, as these typically offer minimal benefit.

Performance

Both the HTC U12+ and LG V40 ThinQ are powered by the Qualcomm Snapdragon 845 (10nm) with an identical CPU configuration: an octa-core setup featuring four Kryo 385 Gold cores clocked at 2.8 GHz and four Kryo 385 Silver cores at 1.7 GHz. Performance will be virtually indistinguishable in most tasks. Thermal management will likely be similar, though the larger chassis of the V40 *may* offer slightly better heat dissipation, potentially mitigating throttling during extended, demanding gaming sessions. Neither device specifies LPDDR5 RAM, suggesting LPDDR4x was used, limiting memory bandwidth compared to newer standards.

Battery Life

Despite both phones achieving an endurance rating of 64 hours, the charging capabilities differ slightly. Both support 18W wired charging with Quick Charge 3.0, achieving 50% charge in approximately 35-36 minutes. However, the LG V40 ThinQ adds 10W wireless charging (Qi standard), a significant convenience feature absent on the U12+. While battery capacity isn’t specified, the endurance rating suggests similar real-world usage times, but the V40’s wireless charging provides a flexibility the U12+ lacks.

Buying Guide

Buy the HTC U12+ if you prioritize a slightly more compact flagship experience and don't heavily rely on wireless charging or demand the absolute best display contrast. Buy the LG V40 ThinQ if you are a media enthusiast who values a vibrant, high-contrast display and the convenience of wireless charging, and are comfortable with a larger device.

Frequently Asked Questions

❓ Does the Snapdragon 845 in either phone struggle with demanding games like PUBG or Genshin Impact?
While the Snapdragon 845 is a capable chipset, it's now several generations old. Expect playable performance in most titles, but you may need to lower graphics settings for consistently smooth frame rates, especially in graphically intensive games. Thermal throttling is possible during extended gaming sessions, potentially impacting performance over time.
❓ Is the lack of detailed camera specs a concern? Should I expect a significant difference in photo quality?
The absence of sensor size, aperture, and image processing details makes a precise comparison difficult. However, both phones were flagship devices, so they likely feature capable camera systems. Expect good image quality in well-lit conditions, but low-light performance may vary. Relying on online sample photos and reviews is recommended.
❓ How does the inclusion of PD2.0 charging on the LG V40 ThinQ benefit me?
Power Delivery 2.0 (PD2.0) is a charging standard that allows for more efficient power transfer. While both phones support Quick Charge 3.0, PD2.0 can potentially negotiate a more optimal charging profile with compatible chargers, leading to slightly faster and more efficient charging.