Kyocera DuraForce Ultra vs. Motorola Defy (2021): A Rugged Smartphone Showdown

The Kyocera DuraForce Ultra and Motorola Defy (2021) both cater to users needing a durable smartphone, but they approach the challenge with different philosophies. The DuraForce Ultra prioritizes modern connectivity with 5G and a more powerful processor, while the Defy focuses on maximizing battery life and offering a more affordable, reliable experience. This comparison dissects their key differences to help you choose the right tool for your demanding lifestyle.
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🏆 Quick Verdict

For users needing 5G connectivity and faster performance for tasks beyond basic communication, the Kyocera DuraForce Ultra is the better choice. However, the Motorola Defy (2021) wins for those prioritizing exceptional battery endurance and a lower price point, making it ideal for extended fieldwork or travel.

PHONES
Phone Names Kyocera DuraForce Ultra Motorola Defy (2021)
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - LATAM
4G bands1, 2, 3, 4, 5, 7, 12, 13, 48, 661, 2, 3, 5, 7, 8, 18, 19, 20, 26, 28, 38, 40, 41 - EMEA
5G bands2, 5, 66, 260, 261 SA/NSA/Sub6/mmWave-
SpeedHSPA, LTE, 5GHSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
TechnologyGSM / HSPA / LTE / 5GGSM / HSPA / LTE
 -1, 2, 3, 4, 5, 7, 8, 19, 28, 66 - LATAM
Launch
Announced2021, March 112021, June 17
StatusAvailable. Released 2021, MayAvailable. Released 2021, July 25
Body
Build-Glass front (Gorilla Glass Victus), plastic frame, plastic back
Dimensions165.1 x 74.9 x 16 mm (6.5 x 2.95 x 0.63 in)169.8 x 78.2 x 10.9 mm (6.69 x 3.08 x 0.43 in)
SIMNano SIM· Nano-SIM· Nano-SIM + Nano-SIM
Weight278 g (9.81 oz)232 g (8.18 oz)
 -IP68 dust/water resistant (up to 1.5m for 35 min) Drop-to-concrete resistance from up to 1.8m MIL-SPEC 810H compliant
Display
ProtectionSapphire ShieldCorning Gorilla Glass Victus
Resolution1080 x 2160 pixels, 18:9 ratio (~443 ppi density)720 x 1600 pixels, 20:9 ratio (~270 ppi density)
Size5.45 inches, 76.7 cm2 (~62.0% screen-to-body ratio)6.5 inches, 102.0 cm2 (~76.8% screen-to-body ratio)
TypeIPS LCDIPS LCD
Platform
CPUOcta-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver)Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
ChipsetQualcomm SM7250 Snapdragon 765G 5G (7 nm)Qualcomm SM6115 Snapdragon 662 (11 nm)
GPUAdreno 620Adreno 610
OSAndroid 10, upgradable to Android 12Android 10
Memory
Card slotmicroSDXC (dedicated slot)microSDXC (uses shared SIM slot)
Internal128GB 6GB RAM64GB 4GB RAM
Main Camera
Dual24 MP, f/1.8, 27mm (wide), 0.9µm, PDAF 16 MP, f/2.0, 16mm, 117˚ (ultrawide), 1.0µm-
FeaturesDual-LED flash, HDR, panoramaLED flash, HDR, panorama
Triple-48 MP, f/1.8, (wide), PDAF 2 MP (macro) Auxiliary lens
Video1080p@30fps1080p@30fps
Selfie camera
Single8 MP, f/2.0, 23mm (wide), 1/4.0", 1.12µm8 MP, f/2.2, 1.12µm
Video1080p@30fps1080p@30fps
Sound
3.5mm jack -Yes
35mm jackUnspecifiedYes
Loudspeaker Yes, with stereo speakersYes
Comms
Bluetooth5.0, A2DP, LE5.0, A2DP, LE
NFCYesYes
PositioningGPS (L1+L5)GPS
RadioNoFM radio
USBUSB Type-C 3.1USB Type-C 2.0
WLANWi-Fi 802.11 a/b/g/n/ac/e/i/k/r/v, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (side-mounted); unspecified sensorsFingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Battery
ChargingWired Wireless (Qi)20W wired
TypeLi-Po 4500 mAhLi-Po 5000 mAh
Misc
ColorsBlackBlack, Green
Models-XT2083-9
PriceAbout 860 EURAbout 280 EUR
Tests
Battery life- Endurance rating 129h
Camera- Photo / Video
Display- Contrast ratio: 1896:1 (nominal)
Loudspeaker- -29.7 LUFS (Average)
Performance- AnTuTu: 177314 (v8), 164592 (v9) GeekBench: 5403 (v4.4), 1511 (v5.1) GFXBench: 13fps (ES 3.1 onscreen)

Kyocera DuraForce Ultra

  • Faster 5G connectivity with Snapdragon 765G
  • More powerful processor for demanding tasks
  • Qi wireless charging support
  • Potentially better image processing due to advanced ISP

  • Likely shorter battery life due to 5G and processor
  • Display brightness may be lower than the Defy

Motorola Defy (2021)

  • Exceptional 129-hour battery endurance
  • Bright 436 nit display for outdoor visibility
  • More affordable price point
  • Rugged design for durability

  • Slower Snapdragon 662 processor
  • Lacks 5G connectivity
  • No wireless charging

Display Comparison

Both devices feature a contrast ratio of 1896:1, suggesting similar visual depth. However, the Motorola Defy (2021) boasts a measured peak brightness of 436 nits, which is crucial for outdoor visibility. While the DuraForce Ultra’s display specs aren’t provided, Kyocera typically prioritizes durability over display extravagance, suggesting it may not match the Defy’s brightness. The lack of information on the DuraForce Ultra’s panel type (LCD vs. AMOLED) makes a direct comparison of color accuracy difficult, but rugged phones often favor LCD for its robustness.

Camera Comparison

Both phones offer photo and video capabilities, but detailed camera specifications are limited. Without sensor size or aperture information, a direct comparison is challenging. However, the Snapdragon 765G in the DuraForce Ultra includes a more advanced Image Signal Processor (ISP) than the 662 in the Defy, potentially leading to better image processing, especially in low-light conditions. The absence of details regarding optical image stabilization (OIS) on either device makes it difficult to assess their video recording capabilities. We can assume both phones will offer adequate, but not flagship-level, camera performance.

Performance

The Kyocera DuraForce Ultra’s Qualcomm Snapdragon 765G (7nm) significantly outperforms the Motorola Defy’s Snapdragon 662 (11nm). The 7nm process node allows for greater transistor density and improved power efficiency, translating to faster processing speeds and better thermal management. The Ultra’s octa-core CPU, with its Kryo 475 Prime and Gold cores, offers a more sophisticated architecture than the Defy’s Kryo 260 cores, resulting in a noticeable performance advantage in multitasking and demanding applications. The 5G capability of the DuraForce Ultra is a key differentiator, enabling faster download and upload speeds where available.

Battery Life

The Motorola Defy (2021) achieves an impressive endurance rating of 129 hours, indicating exceptional battery life. While the DuraForce Ultra’s battery capacity isn’t specified, the more powerful Snapdragon 765G and 5G connectivity will likely consume more power. The Defy’s 20W wired charging is a reasonable speed, but the DuraForce Ultra adds the convenience of Qi wireless charging, offering flexibility in charging options. The Defy’s focus on efficiency clearly translates to a longer-lasting battery experience.

Buying Guide

Buy the Kyocera DuraForce Ultra if you require 5G data speeds for remote work, streaming, or frequent large file transfers, and if you regularly use demanding applications. Buy the Motorola Defy (2021) if you need a phone that can reliably last through multi-day trips without access to charging, or if you work in environments where a dropped phone is a common occurrence and affordability is key.

Frequently Asked Questions

❓ Does the Snapdragon 662 in the Motorola Defy struggle with modern mobile games?
The Snapdragon 662 is a capable processor for casual gaming, but it will likely struggle with graphically demanding titles at higher settings. Expect to lower graphics settings and frame rates for a smoother experience. The DuraForce Ultra’s Snapdragon 765G offers a significantly better gaming experience.
❓ Is the Kyocera DuraForce Ultra’s 5G connectivity useful in remote areas?
5G coverage is still limited, particularly in rural areas. The benefit of the DuraForce Ultra’s 5G capability depends entirely on your location and carrier coverage. If you frequently travel to areas with 5G, it will provide faster data speeds, but otherwise, it may not be a significant advantage.
❓ How does the ruggedness of the Motorola Defy compare to the DuraForce Ultra?
Both phones are built to withstand harsh conditions, but they achieve this differently. Motorola emphasizes water and dust resistance with IP68 rating, while Kyocera often focuses on drop protection and MIL-STD-810H compliance. Both are designed for field work, but the specific certifications and construction methods vary.
❓ Can I easily find replacement batteries for either of these phones?
Replacement batteries for rugged phones can be harder to find than for mainstream devices. Motorola generally has better parts availability than Kyocera, but both will likely require searching through specialized retailers or repair shops.