Both formats can reveal a thermal anomaly. The useful questions are where you work, how long you inspect and what you need to deliver afterwards. A compact phone attachment may be well suited to a nearby target; a standalone camera has advantages on long visits or when you wear gloves.
Start with the detector, not the phone screen
Compare native thermal resolution, field of view, thermal sensitivity and minimum focus distance. A high-resolution phone display does not add thermal measurements. An advertised 480 × 360 processed image may come from a 160 × 120 detector. Our super-resolution guide explains the difference.
At the same distance, two detectors with equal pixel counts may cover very different target sizes if their lenses have different fields of view. Check the real target size and working distance before selecting a device for a small electrical terminal or a wall detail.
Check phone support and operating time
An attachment may depend on connector type, operating-system version and its app. A matching USB-C socket alone does not establish compatibility: check the manufacturer's device list for your exact phone. Depending on the model, power comes from the phone or a separate battery. A handheld camera has its own screen, controls and specified battery runtime.
FLIR's ONE Pro illustrates the phone-attachment format, while its C5 is a standalone pocket camera. Specifications and software change between revisions, so check the exact model and current compatibility rather than assuming every product in a series behaves alike.
Images, measurement settings and reports
For client reports, check for radiometric files, emissivity and reflected-temperature controls, export options and any software cost. Those features do not belong exclusively to either format: some phone units include them, while some standalone cameras do not. If possible, verify the complete workflow from capture to opening a file on your computer.
Choose by task
| Task | Check first |
|---|---|
| Occasional scan of a nearby target | Phone support, close focus, native detector resolution and lens |
| Regular worksite inspections | Controls with gloves, runtime, ruggedness and file transfer |
| Professional reporting | Radiometric files, measurement corrections and reporting workflow |
| Facades or distant targets | Pixel footprint at working distance, determined by lens and distance |
There is no universal winner. Compare phone modules with standalone compact cameras, then enter your budget and distance in the selector. This database compares published specifications and does not replace a hands-on trial.
Sources and scope
- FLIR, ONE and Edge series: native resolution, runtime and device support.
- FLIR, C5 product page: example handheld specifications and measurement settings.
Format comparison based on manufacturer documentation, without hands-on testing of the named devices. Sources checked September 24, 2026.