Cat S53
Caterpillar’s first 5G phone, announced in July 2022. It gets overlooked next to the thermal-camera S62 Pro and the satellite-messaging S75, which is a shame, because on paper it is the most sensible of the three: the biggest battery in the range, the toughest ingress rating, 5G and wireless charging, without paying for a specialist feature you may never use.
Discontinued since Bullitt Group closed in January 2024.
Specifications
| Announced | July 2022 |
| Display | 6.5″ IPS LCD, HD+, recessed toughened glass |
| Chipset | Qualcomm Snapdragon 480 5G (8 nm) |
| Memory | 6 GB LPDDR4X RAM / 128 GB storage, microSD expandable |
| Rear cameras | 48 MP Sony main plus macro, LED flash |
| Battery | 5,500 mAh, the largest of any Cat phone |
| Charging | 18 W Quick Charge 3.0 USB-C, 10 W Qi wireless |
| Network | 5G |
| Ratings | IP68 (1.5 m for 35 min) and IP69K, MIL-STD-810H |
| OS | Android 12, final |
Two corrections worth stating plainly, because both are widely misreported including by pages ranking well in search: the S53 runs a Qualcomm Snapdragon 480 5G, not a MediaTek chip, and it does support 5G.
What stands out
The battery. 5,500 mAh is larger than the S75‘s and nearly 40% larger than the S62 Pro‘s, driving a lower-resolution HD+ screen with an efficient 8 nm chip. This is the Cat phone most likely to finish a long shift with charge left.
IP69K. Covers high-pressure, high-temperature water jets, which is the rating that matters if equipment gets steam-cleaned or pressure-washed. Not every Cat model has it.
Wireless charging on a rugged phone. A bigger deal than it sounds on a phone that lives in dust and mud: a charging pad means you are not repeatedly opening and closing the USB-C port cover, which is the seal most likely to fail first.
A recessed screen. The glass sits below the raised bezel, so a face-down drop onto a flat surface lands on the frame.
The trade-offs
HD+ on a 6.5-inch screen. This is where the money was saved. Text is noticeably less sharp than the S75’s FHD+ panel. Fine for maps, messages and forms; a visible step down for reading or video.
Snapdragon 480 is entry-level 5G. It handles everyday apps and navigation without complaint. Heavy multitasking will show its limits.
No thermal camera, no satellite messaging. If you need either, this is the wrong model. The S62 Pro carries the FLIR sensor and the S75 carries the satellite radio.
Android 12 is final. No further security updates.
Who it suits
The right pick if you want a tough, sealed, long-lasting 5G phone and don’t need a specialist sensor. Delivery drivers, warehouse and yard staff, groundworkers, agriculture: anyone who wants the phone to last the day and survive the environment without paying for thermal imaging.
Buying one now
No manufacturer warranty exists, though statutory rights against the retailer may still apply depending on where you bought it. Full detail on support and warranty
Check the battery first, because 5,500 mAh degraded to 60% health is a very different phone and the cell is not user-replaceable. Confirm the port cover seals are intact and the recessed glass is unchipped. Verify LTE and 5G band support against your carrier before you buy, and check what the S53 currently sells for so you can tell an overpriced listing from a fair one.