Sonim XP5900 (XP5+)
Overview
The Sonim XP5900, marketed as the XP5+ (XP5 Plus), is the next-generation ultra-rugged 4G LTE bar phone with physical volume and TX knobs, running Android 11. It builds on the XP5800 with a newer OS, higher-capacity battery, and updated MIL-STD-810H certification. Available unlocked for AT&T and T-Mobile, with or without the physical knob assembly.
Technical Specifications
| Form Factor | Ultra-rugged bar phone — available with or without physical knobs |
| Operating System | Android 11 |
| Display | 2.8" color TFT |
| Processor | Qualcomm Snapdragon 210, quad-core |
| RAM | 2 GB |
| Internal Storage | 16 GB |
| Expandable Storage | microSD up to 512 GB |
| Camera | 5 MP auto-focus, LED flash · no front camera |
| Battery | 4,300 mAh Li-Ion, removable |
| Wi-Fi | 802.11 b/g/n/ac |
| Bluetooth | 5.0 |
| GPS | Yes |
| Push-to-Talk (PTT) | Dedicated PTT button (programmable) |
| Charging | USB-C |
| SIM | Dual SIM slots — SIM 1 only |
| Durability | MIL-STD-810H · IP68 · drop-proof (1.8m / 6ft) |
| Network | 4G LTE · AT&T / T-Mobile (unlocked) |
Key Features
- ◆ MIL-STD-810H rated — shock, vibration, temperature extremes
- ◆ IP68 dustproof and waterproof
- ◆ Drop-proof up to 1.8m (6 ft)
- ◆ Available with or without physical volume/TX knobs
- ◆ 5 MP camera with LED flash
- ◆ Dedicated PTT button (programmable)
- ◆ High-capacity removable 4,300 mAh battery
- ◆ USB-C charging
- ◆ HD Voice (VoLTE)
- ◆ Hearing Aid Compatible (HAC)
- ◆ Unlocked — works on AT&T and T-Mobile
Lockdown Options
The XP5900 supports a single lockdown tier managed by Yoder Connections. Lockdown is priced at the moderate rate. Any app on the phone can be individually blocked. Lockdown can be changed or reverted to OEM at any time. Video cannot be locked separately from other features.
Operational Notes
Talk-Only Lockdown — Texts Still Visible in Notifications
Even with a talk-only lockdown applied, incoming text messages will still arrive and appear in the notification shade. The customer cannot open or reply to the message, but the text preview is visible in notifications.
Sticky Keys (Key Input Duplicates)
Customers on the XP5900 frequently report that key presses register twice (duplicate input). This is a known hardware/firmware behavior on this model. If the issue persists after a software update, advise the customer to contact Sonim support.
Weather App — T9 Keyboard Required
The XP5900 keypad does not work with the standard weather app alone. If a customer wants the weather app, the T9 keyboard app must also be installed to allow text input (e.g., adding a new location). Total charge for both apps: $40.
Keypad Input Mode Won’t Switch
If the keypad input mode refuses to switch (e.g., shows “Abc” but only produces numbers), clear the storage for the keyboard app:
- Go to Settings > Apps & notifications > Show System apps.
- Find 12key Keyboard.
- Tap Force Stop.
- Open Storage & cache and tap Clear Storage.
PTT Button
Carrier service plans offered by Yoder Connections do not support the push-to-talk (PTT) function. On some units, pressing the PTT button causes the phone to lose service until power-cycled. Remap or disable it via Settings > Programmable Key(s).
SIM Slots
The XP5900 has two SIM slots. Only the SIM in tray 1 is functional.
Call Screening
When setting up call screening (whitelist/blacklist), enter numbers on the sales order in
comma-separated format with no spaces: 6417775273,6417990302,6417994013.