Cubot KingKong ES 3 vs Doogee S99: Which Rugged Phone Reigns Supreme?

The rugged smartphone market is heating up, offering durable devices for outdoor enthusiasts and demanding work environments. The Cubot KingKong ES 3 and Doogee S99 both aim to deliver resilience, but diverge in their approach to performance and features. This comparison dissects their key specifications to determine which phone offers the best value for your needs.
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🏆 Quick Verdict

For users prioritizing sustained battery life and a stable, efficient experience, the Cubot KingKong ES 3 is the better choice. However, the Doogee S99 edges ahead for those who demand more processing power for gaming or demanding applications, coupled with the convenience of wireless and reverse charging.

PHONES
Phone Names Cubot KingKong ES 3 Doogee S99
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 38, 40, 41, 661, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / HSPA / LTEGSM / CDMA / HSPA / LTE
Launch
Announced2025, August2022, December 05
StatusAvailable. Released 2025, AugustAvailable. Released 2022, December 05
Body
Dimensions177.4 x 83.7 x 15.3 mm (6.98 x 3.30 x 0.60 in)172 x 82 x 15.5 mm (6.77 x 3.23 x 0.61 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight352 g (12.42 oz)-
Display
ProtectionMohs level 6Corning Gorilla Glass
Resolution720 x 1600 pixels, 20:9 ratio (~260 ppi density)1080 x 2340 pixels, 19.5:9 ratio (~409 ppi density)
Size6.75 inches, 110.0 cm2 (~74.1% screen-to-body ratio)6.3 inches, 97.4 cm2 (~69.1% screen-to-body ratio)
TypeIPS LCD, 90HzIPS LCD
Platform
CPUOcta-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)Octa-core (2x2.05 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
ChipsetUnisoc T615 (12 nm)Mediatek MT6781 Helio G96 (12 nm)
GPUMali-G57 MP1Mali-G57 MC2
OSAndroid 15Android 12
Memory
Card slotmicroSDXC (uses shared SIM slot)microSDXC (dedicated slot)
Internal256GB 6GB RAM128GB 8GB RAM
Main Camera
FeaturesLED flashDual-LED flash, HDR, panorama
Triple48 MP, (wide), PDAF 2 MP (macro) Auxiliary lens108 MP, f/1.9, (wide), 1/1.52", 0.7µm, PDAF 64 MP, f/1.8, (night vision), 2 infrared night vision lights 16 MP, f/1.8, 130˚ (ultrawide)
VideoYes1440p@30fps, 1080p@30fps
Selfie camera
Single16 MP32 MP, f/2.0, (wide), 1/2.8", 0.8µm
VideoYes1080p@30fps
Sound
35mm jackNoNo
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, LE5.1, A2DP, LE
NFCYesYes (market/region dependent)
PositioningGPS, GALILEO, GLONASS, BDSGPS, GLONASS, GALILEO, BDS
RadioNoFM radio
USBUSB Type-CUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-bandWi-Fi 802.11 a/b/g/n/ac, dual-band
Features
SensorsAccelerometer, proximity, compassFingerprint (side-mounted), accelerometer, gyro, proximity, compass
Battery
Charging33W wired33W wired, 45% in 30 min 15W wireless Reverse wired
Type10200 mAh6000 mAh
Misc
ColorsBlackGold, Black
PriceAbout 160 EURAbout 250 EUR
EU LABEL
Battery61:01h endurance, 1300 cycles-
EnergyClass E-
Free fallClass C (90 falls)-
RepairabilityClass C-

Cubot KingKong ES 3

  • Exceptional battery endurance (61:01h)
  • High battery cycle count (1300 cycles)
  • Efficient Unisoc T615 chipset for stable performance

  • Less powerful CPU compared to the Doogee S99
  • Lacks wireless and reverse charging capabilities

Doogee S99

  • More powerful Mediatek Helio G96 chipset
  • Faster charging with 33W wired and 15W wireless
  • Reverse wired charging for added convenience

  • Potentially shorter battery life compared to the Cubot ES 3
  • Battery cycle count not specified

Display Comparison

Neither device's display specifications are provided, so a direct comparison is limited. However, given the price points, we can expect both to utilize IPS LCD panels. The focus here will likely be on durability rather than display quality. The absence of details like resolution or refresh rate suggests neither phone is targeting display-centric users.

Camera Comparison

Without detailed camera specifications beyond the chipsets, a precise comparison is difficult. However, the Helio G96 in the Doogee S99 typically supports more advanced image signal processors (ISPs) capable of handling higher resolution sensors and more complex image processing algorithms. This suggests the S99 may offer better image quality, especially in challenging lighting conditions. The absence of information on sensor sizes or optical image stabilization (OIS) makes a definitive statement impossible, but the chipset advantage leans towards the Doogee.

Performance

The Doogee S99 boasts the Mediatek Helio G96, featuring a CPU with 2x2.05 GHz Cortex-A76 cores and 6x2.0 GHz Cortex-A55 cores, while the Cubot KingKong ES 3 utilizes the Unisoc T615 with 2x1.8 GHz Cortex-A75 and 6x1.6 GHz Cortex-A55 cores. The G96’s Cortex-A76 cores represent a significant architectural improvement over the T615’s A75 cores, offering better single-core performance crucial for responsive app loading and smoother multitasking. While both chipsets are built on a 12nm process, the G96’s more modern architecture translates to a noticeable performance advantage, particularly in graphically intensive tasks. This benefits users who play mobile games or use demanding applications.

Battery Life

The Cubot KingKong ES 3 claims an impressive 61:01h endurance and 1300 charge cycles, indicating a focus on long-term battery health and longevity. While the Doogee S99 doesn’t provide endurance figures, it offers 33W wired charging with a 45% charge in 30 minutes, alongside 15W wireless charging and reverse wired charging. The ES 3’s endurance suggests a larger battery capacity optimized for efficiency. The S99’s charging capabilities provide flexibility, allowing for both fast wired and convenient wireless top-ups, and the reverse charging feature can be a lifesaver for accessories or other devices in emergencies.

Buying Guide

Buy the Cubot KingKong ES 3 if you need a phone that will reliably last through multi-day use, prioritizing battery endurance over raw processing speed. This is ideal for hikers, campers, or anyone working in remote locations. Buy the Doogee S99 if you prefer a phone capable of handling more intensive tasks like gaming or video editing, and value the added convenience of wireless charging and the ability to charge other devices.

Frequently Asked Questions

❓ Does the Unisoc T615 in the Cubot KingKong ES 3 struggle with demanding games like PUBG?
While the Unisoc T615 is a capable chipset for everyday tasks, it may require lower graphics settings and frame rates for a smooth experience in graphically intensive games like PUBG. The Doogee S99 with its Helio G96 will offer a noticeably better gaming experience.
❓ How practical is the 15W wireless charging on the Doogee S99 compared to the 33W wired charging?
15W wireless charging is significantly slower than 33W wired charging. It's best suited for overnight charging or topping up the battery when a wired connection isn't convenient. The 33W wired charging on the Doogee S99 will provide a much faster charge, reaching 45% in just 30 minutes.
❓ What does the 1300 charge cycle claim mean for the Cubot KingKong ES 3's long-term battery health?
A 1300 charge cycle claim suggests the battery is designed to retain a significant portion of its original capacity even after being fully charged and discharged 1300 times. This indicates a higher level of long-term battery health compared to phones with lower cycle counts.
❓ Is the reverse wired charging on the Doogee S99 useful for more than just emergencies?
Yes, reverse wired charging can be useful for charging accessories like Bluetooth headphones or smartwatches on the go. While not a primary feature, it adds a layer of convenience for users who frequently use multiple devices.