Light Phone III vs Sonim XP3 Plus
Our Winner: Light Phone III
The Light Phone III is the first minimalist phone that feels like zero compromise on quality. If budget allows, it is the best intentional phone you can buy today. The Sonim XP3 Plus remains the better choice if the ~$449 savings matter more than the differences below.
Feature Comparison
| Specification | Light Phone III | Sonim XP3 Plus |
|---|---|---|
| Brand | Light | Sonim |
| Model number | LP3 | XP3900 |
| Release year | 2025 | 2022 |
| Availability | available | available |
| Price | $599 | $149.99 |
| Operating system | LightOS (Android-based) | Android-based (no app store) |
| Processor | Qualcomm SM4450 | Qualcomm QCS2290 |
| RAM | 6GB | 2GB |
| Storage | 128GB | 16GB |
| Expandable storage | None | microSD up to 128GB |
| Display | 3.92" matte black-and-white OLED | 2.8" main + 1.44" cover display |
| Battery | 1800 mAh | 1550 mAh |
| Battery life | 1-2 days typical use | Up to 10 days standby |
| Weight | 124 g | 229 g |
| Dimensions | 106 x 55.3 x 12 mm | 110 x 57.4 x 24.6 mm |
| Camera | 50MP rear, 8MP front | 5MP with flash |
| Form factor | bar | flip |
| Bluetooth | Yes | Yes |
| Wi-Fi | Yes | Yes |
| GPS | Yes | Yes |
| NFC | Yes | No |
| USB-C | Yes | Yes |
| Hotspot | Yes | Yes |
| Dual SIM | No | No |
| VoLTE | Yes | Yes |
| Hearing aid compatibility | Not rated | HAC M4/T4 |
| Network support | 4G LTE (5G-capable hardware) | 4G LTE (AT&T, T-Mobile, Verizon variants) |
| US carriers | Verizon, T-Mobile, AT&T | AT&T, T-Mobile, Verizon |
Design
Light Phone III
Machined aluminum sides, a two-stage shutter button, and a scroll wheel give it genuine gadget joy. It feels like a premium camera company made a phone.
Sonim XP3 Plus
Every surface is reinforced. The keys are huge, spaced, and tactile; the hinge is rated far beyond typical flip lifespans.
Battery
Light Phone III
The 1800 mAh replaceable battery lasts a day or two. Not class-leading, but USB-C fast charging and easy replacement soften the blow.
Sonim XP3 Plus
The removable 1550 mAh battery covers 1-3 days. Swappable spares keep field crews running through long shifts.
Features & Connectivity
Light Phone III
4G VoLTE on Verizon, T-Mobile, and AT&T, plus Wi-Fi, Bluetooth 5.0, GPS, hotspot, and NFC hardware for future features.
Sonim XP3 Plus
4G VoLTE across AT&T, T-Mobile, and Verizon (by variant), plus Wi-Fi, GPS, Bluetooth, and hotspot support.
Privacy
Light Phone III
No ads, no data selling, no third-party apps, no cloud lock-in. Combined with the fingerprint reader, it is the most private polished phone experience available.
Sonim XP3 Plus
Locked-down Android with no app store keeps both distractions and data exhaust minimal.
Ease of Use & Performance
Light Phone III
The Snapdragon-class chip makes LightOS feel effortless. The 50MP camera produces genuinely good monochrome-workflow photos saved in full color.
Sonim XP3 Plus
Rock-solid calls with active noise cancellation, a speaker that overpowers machinery, and dependable reception on band-appropriate variants.
Value
The Light Phone III sells for about $599 and the Sonim XP3 Plus for about $149.99. That makes the Sonim XP3 Plus the value pick by roughly $449 — worth weighing against the feature differences above.
Final Recommendation
Buy the Light Phone III if you want the stronger overall package — especially for minimalists and privacy use. Choose the Sonim XP3 Plus if your priority is construction or outdoor, or if budget is the deciding factor.
Buy the Light Phone III
Light Phone III · $599We may earn a commission when you buy through these links, at no cost to you.
Buy the Sonim XP3 Plus
Sonim XP3 Plus · $149.99We may earn a commission when you buy through these links, at no cost to you.