Sonim XP8 vs Cat S61: A Head-to-Head of Rugged Smartphone Twins

The Sonim XP8 and Cat S61 occupy a niche market: ultra-durable smartphones built to withstand harsh conditions. While both brands cater to professionals and outdoor enthusiasts, a closer look reveals a surprising similarity in core specifications. This comparison dissects their shared foundation to determine which device offers the most compelling package for users prioritizing resilience.
Phones Images

🏆 Quick Verdict

For the average user needing a truly rugged phone, the choice between the Sonim XP8 and Cat S61 is largely down to brand preference and software experience. Given their identical core hardware, the Sonim XP8 edges out slightly due to its historically stronger focus on push-to-talk functionality, a key feature for many target users.

PHONES
Phone Names Sonim XP8 Cat S61
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700 / 1900 / 2100 - EU/ROW
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 20, 25, 26, 28, 29, 30, 38, 40, 41, 661, 2, 3, 5, 7, 8, 19, 20, 26, 28, 38, 39, 40, 41 - EU/ROW
SpeedHSPA 42.2/5.76 Mbps, LTE (3CA) Cat12 600/150 MbpsHSPA 42.2/5.76 Mbps, LTE (3CA) Cat12 600/150 Mbps
TechnologyGSM / CDMA / HSPA / EVDO / LTEGSM / HSPA / LTE
 CDMA2000 1xEV-DO 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 25, 26, 28, 29, 66 - USA
Launch
Announced2018, April. Released 2018, May2018, February. Released 2018, June
StatusDiscontinuedDiscontinued
Body
Build-Glass front (Gorilla Glass 5), plastic back, aluminum frame
Dimensions152 x 79.5 x 18 mm (5.98 x 3.13 x 0.71 in)163 x 78 x 13 mm (6.42 x 3.07 x 0.51 in)
SIMNano-SIM + Nano-SIM· Nano-SIM (South Africa only)· Nano-SIM + Nano-SIM
Weight335 g (11.82 oz)250 g (8.82 oz)
 IP69 dust proof and water resistant over 1 meter and 30 minutes MIL-STD-810GIP68 dust/water resistant (up to 3m for 60 min) Drop-to-concrete resistance from up to 1.8m MIL-STD-810G compliant
Display
ProtectionCorning Gorilla Glass 3Corning Gorilla Glass 5
Resolution1080 x 1920 pixels, 16:9 ratio (~441 ppi density)1080 x 1920 pixels, 16:9 ratio (~424 ppi density)
Size5.0 inches, 68.9 cm2 (~57.0% screen-to-body ratio)5.2 inches, 74.5 cm2 (~58.6% screen-to-body ratio)
TypeIPS LCDIPS LCD
Platform
CPUOcta-core 2.2 GHz Cortex-A53Octa-core 2.2 GHz Cortex-A53
ChipsetQualcomm SDM630 Snapdragon 630 (14 nm)Qualcomm SDM630 Snapdragon 630 (14 nm)
GPUAdreno 508Adreno 508
OSAndroid 7.0 (Nougat)Android 8.0 (Oreo), upgradable to Android 9.0 (Pie)
Memory
Card slotmicroSDXCmicroSDXC (uses shared SIM slot)
Internal64GB 4GB RAM64GB 4GB RAM
Main Camera
FeaturesLED flash, HDR, panoramaThermal imaging, heat palettes, temp. spot meter, dual-LED dual-tone flash, panorama
Single12 MP, PDAF16 MP, PDAF, FLIR thermal camera (Lepton module)
Video1080p@30fps4K@30fps, 1080p@30fps
Selfie camera
Single8 MP8 MP
Video1080p@30fps1080p@30fps
Sound
3.5mm jack NoYes
35mm jackNoYes
Loudspeaker YesYes
Comms
Bluetooth5.0, A2DP, EDR, LE5.0, A2DP, LE
NFCYesYes
PositioningGPS, GLONASSGPS, GLONASS, GALILEO, QZSS, SBAS
RadioFM radioFM radio
USBUSB Type-C 2.0, magnetic connectorUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Features
SensorsAccelerometer, gyro, proximity, compass, barometerAccelerometer, gyro, proximity, compass, barometer, indoor air quality sensor
 -Laser-assisted distance measurement tool
Battery
Charging18W wired, QC418W wired, QC4
Music playUp to 70 h-
Stand-byUp to 720 hUp to 888 h (3G)
Talk timeUp to 30 hUp to 35 h (3G)
TypeLi-Ion 4900 mAh, removableLi-Ion 4500 mAh, non-removable
Misc
ColorsBlackBlack
ModelsXP8800-
PriceAbout 700 EURAbout 900 EUR

Sonim XP8

  • Stronger focus on push-to-talk (PTT) functionality.
  • Established reputation within the rugged phone market.
  • Potentially more durable speaker grill design (based on brand history).

  • May have a less refined software experience compared to Cat.
  • Limited availability in some regions.

Cat S61

  • More mainstream Android software experience.
  • Wider availability of accessories.
  • Potentially broader carrier support.

  • Less specialized for push-to-talk communication.
  • May prioritize aesthetics slightly over ultimate ruggedness.

Display Comparison

Both the Sonim XP8 and Cat S61 lack detailed display specifications in the provided data. However, given their target market, we can infer a focus on visibility under direct sunlight and scratch resistance. Expect both to utilize hardened glass, likely Gorilla Glass of some generation, and potentially offer glove mode for operation with work gloves. Without nit brightness or resolution data, a direct comparison is impossible, but both will prioritize functionality over bleeding-edge display technology.

Camera Comparison

Camera specifications are absent from the provided data. However, rugged phones typically prioritize durability over photographic excellence. Expect both the Sonim XP8 and Cat S61 to feature cameras capable of capturing usable images in various conditions, but not competing with flagship smartphone cameras. Image processing will likely focus on clarity and reliability rather than artistic effects. The absence of detailed sensor information suggests neither device will excel in low-light photography.

Performance

The heart of both devices is the Qualcomm Snapdragon 630 (14nm). This chipset, paired with an octa-core 2.2 GHz Cortex-A53 CPU, delivers mid-range performance suitable for essential tasks, communication, and basic productivity. The 14nm process node, while not the most advanced, offers a reasonable balance between power efficiency and performance. Given the identical silicon, real-world performance will be virtually indistinguishable between the two. Thermal management will likely be similar, relying on passive cooling due to the sealed, rugged designs. Neither phone is positioned for demanding gaming or intensive multitasking.

Battery Life

Both devices support 18W wired charging with Quick Charge 4 (QC4) compatibility. While 18W isn't fast by modern standards, it's adequate for a device prioritizing longevity and durability. Without battery capacity (mAh) data, it's impossible to determine which phone offers superior battery life. However, the Snapdragon 630's efficiency suggests both will provide at least a full day of moderate use. QC4 support ensures reasonably quick top-ups when a power source is available.

Buying Guide

Buy the Sonim XP8 if you require seamless integration with push-to-talk (PTT) systems, prioritizing voice communication in demanding environments. Its heritage in this space provides a more refined experience. Buy the Cat S61 if you prefer a more mainstream Android experience with a broader ecosystem of accessories and potentially wider availability, while still benefiting from robust durability.

Frequently Asked Questions

❓ Given the identical Snapdragon 630 chipset, will either phone struggle with modern apps like WhatsApp or Facebook?
No, the Snapdragon 630 is perfectly capable of running common applications like WhatsApp and Facebook without significant issues. While not a high-end processor, it provides sufficient power for everyday tasks and communication, which are the primary use cases for these rugged devices.
❓ Are these phones compatible with hearing aids? Rugged phones often have unique antenna designs.
While neither Sonim nor Cat explicitly lists hearing aid compatibility, both manufacturers typically adhere to industry standards for Bluetooth connectivity. Users with hearing aids should check the specific compatibility ratings of their devices with the Sonim XP8 or Cat S61 before purchasing, as antenna design can sometimes cause interference.
❓ How well do these phones perform in extremely cold temperatures? Will the battery life be significantly impacted?
Rugged phones are generally designed to operate in wider temperature ranges than standard smartphones. However, extremely cold temperatures *will* impact battery life. Lithium-ion batteries experience reduced capacity in the cold. Both the Sonim XP8 and Cat S61 are likely rated for operation down to -20°C or lower, but expect shorter battery runtimes in such conditions.