Ulefone Armor 28 Ultra Thermal vs. Cat S75: A Deep Dive into Rugged Smartphone Performance
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🏆 Quick Verdict
For users prioritizing raw power and cutting-edge features like thermal imaging, the Ulefone Armor 28 Ultra Thermal is the clear winner. Its Dimensity 9300+ chipset delivers significantly faster performance. However, the Cat S75 remains a compelling option for those seeking a dependable, long-lasting device with a more conservative price point.
| PHONES | ||
|---|---|---|
| Phone Names | Ulefone Armor 28 Ultra Thermal | Cat S75 |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66, 71 | 1, 2, 3, 4, 5, 7, 8, 20, 28, 32, 38, 39, 40, 41 |
| 5G bands | 1, 2, 3, 5, 7, 8, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78, 79 SA/NSA/Sub6 | 1, 2, 3, 5, 7, 8, 20, 23, 28, 38, 40, 41, 75, 77, 78, 255, 256 SA/NSA/Sub6/mmWave |
| Speed | HSPA, LTE, 5G | HSPA, LTE, 5G |
| Technology | GSM / CDMA / HSPA / CDMA2000 / LTE / 5G | GSM / HSPA / LTE / 5G |
| Launch | ||
|---|---|---|
| Announced | 2024, September 03 | 2023, February 24 |
| Status | Available. Released 2025, March 17 | Available. Released 2023, July |
| Body | ||
|---|---|---|
| Build | - | Glass front (Gorilla Glass Victus), plastic back, aluminum frame |
| Dimensions | 174.2 x 83.6 x 19.4 mm (6.86 x 3.29 x 0.76 in) | 171 x 80 x 11.9 mm (6.73 x 3.15 x 0.47 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 450 g (0.99 lb) | 268 g (9.45 oz) |
| - | IP68/IP69 dust/water resistant (up to 5m for 35 min) Drop-to-concrete resistance from up to 1.8m MIL-STD-810H compliant | |
| Display | ||
|---|---|---|
| Protection | Corning Gorilla Glass Victus | Corning Gorilla Glass Victus |
| Resolution | 1080 x 2460 pixels (~395 ppi density) | 1080 x 2408 pixels, 20:9 ratio (~400 ppi density) |
| Size | 6.67 inches, 110.0 cm2 (~75.5% screen-to-body ratio) | 6.6 inches, 104.9 cm2 (~76.7% screen-to-body ratio) |
| Type | AMOLED, 1B colors, 120Hz, 900 nits (HBM), 2200 nits (peak) | IPS LCD, 120Hz |
| Platform | ||
|---|---|---|
| CPU | Octa-core (1x3.25 GHz Cortex-X4 & 3x2.85 GHz Cortex-X4 & 4x2.0 GHz Cortex-A720) | Octa-core (2x2.2 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) |
| Chipset | Mediatek Dimensity 9300+ (4 nm) | Mediatek Dimensity 930 (6 nm) |
| GPU | Immortalis-G720 MC12 | IMG BXM-8-256 |
| OS | Android 15 | Android 12 |
| Memory | ||
|---|---|---|
| Card slot | microSDXC (dedicated slot) | microSDXC (uses shared SIM slot) |
| Internal | 1TB 16GB RAM | 128GB 6GB RAM |
| Main Camera | ||
|---|---|---|
| Features | Quad-LED flash, HDR, panorama | Dual-LED flash, HDR, panorama |
| Quad | 50 MP, f/1.9, (wide), 1.0"-type, 1.6µm, dual pixel PDAF 64 MP, f/1.8, (night vision), 1/2", 0.7µm, 4 infrared lights 50 MP, f/2.2, 117˚ (ultrawide), 1/2.76", 0.64µm Thermal camera by ThermoVue T2, 640x512 px | - |
| Single | - | 8 MP, f/2.0, (wide) |
| Triple | - | 50 MP, f/1.8, (wide), PDAF 8 MP, f/2.2, (ultrawide) 2 MP (macro) |
| Video | 8K@30fps, 4K@30/60fps, 1080p@30/60fps, gyro-EIS | 1080p@30fps |
| Selfie camera | ||
|---|---|---|
| Single | 50 MP, f/2.5, (wide), 1/2.76", 0.64µm | 8 MP, f/2.0, (wide) |
| Video | 1080p@30fps | 1080p@30fps |
| Sound | ||
|---|---|---|
| 3.5mm jack | - | No |
| 35mm jack | Yes | No |
| Loudspeaker | Yes | Yes |
| Comms | ||
|---|---|---|
| Bluetooth | 5.4, A2DP, LE | 5.1, A2DP, LE |
| Infrared port | Yes | - |
| NFC | Yes | Yes |
| Positioning | GPS, GALILEO, GLONASS, QZSS, BDS, NavIC | GPS (L1+L5), GALILEO, GLONASS, BDS |
| Radio | Wireless FM radio, RDS, recording | Unspecified |
| USB | USB Type-C 3.2 Gen2, Display Port 1.4, OTG, accessory connector pins | USB Type-C 2.0, OTG |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6/7, tri-band | Wi-Fi 802.11 a/b/g/n/ac, dual-band |
| Features | ||
|---|---|---|
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer | Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass |
| - | Emergency SOS via satellite (Bullitt Satellite Connect service) | |
| Battery | ||
|---|---|---|
| Charging | 120W wired, PPS, 40% in 10 min 50W wireless, 35% in 30 min 10W reverse wired Reverse wireless | 15W wireless |
| Type | Li-Ion 10600 mAh | Li-Po 5000 mAh |
| Misc | ||
|---|---|---|
| Colors | Black | Black |
| Models | - | BM1S1B |
| Price | $ 899.80 | About 600 EUR |
Ulefone Armor 28 Ultra Thermal
- Significantly faster processor (Dimensity 9300+)
- Ultra-fast 120W wired and 50W wireless charging
- Integrated thermal imaging camera
- Reverse wireless charging capability
- Likely higher price point
- Potential for increased heat generation under heavy load
Cat S75
- Proven durability and reliability (Cat brand reputation)
- More affordable price
- Simpler, more focused feature set
- Potentially longer battery life (depending on capacity)
- Slower processor (Dimensity 930)
- Slow 15W wireless charging
- Lacks advanced features like thermal imaging
Display Comparison
Display specifications are not provided for either device. However, given the Armor 28 Ultra Thermal's focus on premium features, it likely incorporates a higher-resolution panel and potentially LTPO technology for adaptive refresh rates, resulting in smoother visuals and improved power efficiency. The Cat S75, positioned as a more practical device, likely utilizes a standard LCD or AMOLED panel. Bezels are expected to be larger on the Cat S75, reflecting its focus on durability over aesthetics.
Camera Comparison
Camera details beyond the presence of thermal imaging on the Ulefone are absent. However, the Armor 28 Ultra Thermal’s flagship positioning suggests a more advanced camera system with larger sensors and improved image processing. The Cat S75 likely features a more modest camera setup focused on practicality. The thermal imaging capability of the Ulefone is a unique selling point, catering to professionals in fields like building inspection, electrical maintenance, and search & rescue. The absence of OIS information for either device makes it difficult to assess low-light performance without further testing.
Performance
The Ulefone Armor 28 Ultra Thermal’s Mediatek Dimensity 9300+ (4nm) represents a substantial leap in performance over the Cat S75’s Dimensity 930 (6nm). The 9300+ features a cutting-edge CPU configuration – 1x3.25 GHz Cortex-X4, 3x2.85 GHz Cortex-X4, and 4x2.0 GHz Cortex-A720 – offering significantly faster processing speeds and improved multi-tasking capabilities. The 6nm process node of the Dimensity 930 in the Cat S75 is less efficient, potentially leading to more heat generation under sustained load. The Armor 28 Ultra Thermal’s superior chipset will benefit users engaged in demanding tasks like gaming, video editing, and running complex applications. The Cat S75’s Dimensity 930, while capable, is geared towards everyday use.
Battery Life
Battery capacities are not specified. However, the Ulefone Armor 28 Ultra Thermal’s 120W wired charging (40% in 10 minutes) and 50W wireless charging (35% in 30 minutes) provide a significant advantage over the Cat S75’s 15W wireless charging. The Ulefone also offers 10W reverse wired and wireless charging, adding to its versatility. While the Cat S75 may offer longer overall battery life due to a potentially larger capacity, the Ulefone’s faster charging speeds minimize downtime. The Armor 28 Ultra Thermal’s PPS support ensures optimized charging with compatible chargers.
Buying Guide
Buy the Ulefone Armor 28 Ultra Thermal if you need a smartphone capable of handling intensive tasks like gaming, video editing, or running specialized applications, and if the integrated thermal camera is a key requirement. Buy the Cat S75 if you prioritize a balance of durability, reliability, and affordability, and if your workload consists of standard smartphone tasks and field work where extreme processing power isn't essential.