The Sonim XP400 is a balanced everyday device, powered by the Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm), suited to light-to-moderate use, with a 5,000 mAh battery for solid all-day use (2025).
2025 · Lower-mid-range · Android 14
Overall
B+
Performance
B+
Display
B
Battery
B+
Camera
A
Software
A
ⓘ Grades compare this device against others in its own market segment (Mid-range), not against every device on the site.
⚡ Quick Specs
Size6.5" · 170 x 78 x 10.2 mm (6.69 x 3.07 x 0.40 in)
ChipsetQualcomm SM4450 Snapdragon 4 Gen 2 (4 nm)
RAM6GB
Storage128GB
Main Camera50 MP · LED flash
⚖️ Compare With
✓︎ Pros
✓Long 5,000 mAh battery, easily lasts a full day
✓6.5" IPS LCD display with accurate colours and wide viewing angles
⊗ Cons
✗Entry-level Qualcomm SM4450 Snapdragon 4 Gen 2 (4 nm) — struggles with demanding apps
✗Heavy at 230g — noticeable in pocket over long periods
✗No headphone jack — requires wireless or USB-C audio
Yes, the Sonim XP400 has NFC for contactless payments and pairing.
The Sonim XP400 is rated IP68/IP69K — IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) MIL-STD-810H compliant.
Yes, the Sonim XP400 supports microSDXC expandable storage.
The Sonim XP400 SIM configuration: Nano-SIM + Nano-SIM.
No, the Sonim XP400 does not have a 3.5mm headphone jack.
Yes, the Sonim XP400 has stereo speakers.
The Sonim XP400 ships with Android 14, up to 2 major Android upgrades.
The Sonim XP400 uses USB Type-C 3.1.
The Sonim XP400 supports Wi-Fi 802.11 a/b/g/n/ac, dual-band.
