Category Breakdown
Siemens SX66
Sonim XP3plus
Performance
31.363.9
Camera
2.52.5
Display
9.527.2
Battery
1.620.8
Build
0.20.2
Connectivity
11.953.9
Audio
8.98.9
Overall
6.425.1
Summary
- The Siemens SX66, released in 2004, features a 3.5-inch TFT resistive touchscreen with a resolution of 240 x 320 pixels, while the Sonim XP3plus, launched in 2021, has a smaller 2.8-inch TFT LCD display with the same resolution but a higher pixel density.
- In terms of performance, the SX66 is powered by a 520 MHz Intel Xscale CPU and has 128MB of RAM, whereas the XP3plus utilizes a more advanced Qualcomm Snapdragon 662 octa-core processor with 16GB of RAM, providing significantly better performance.
- The camera on the SX66 is non-existent, while the XP3plus includes an 8MP rear camera, enhancing its photographic capabilities.
- Battery-wise, the SX66 lacks a specified capacity, while the XP3plus has a 2300mAh battery, offering longer usage.
- The SX66 runs on Microsoft Windows Mobile 2003 SE, whereas the XP3plus operates on Sonim OS based on Android 11, providing a more modern software experience.
- Build quality is comparable, with the SX66 measuring 125 x 71 x 18 mm and weighing 210g, while the XP3plus is slightly smaller at 116 x 60 x 28 mm and weighs 220g.
Side-by-side Specification Comparison
Siemens SX66
Sonim XP3plus
General
Release Date
2004
2021
Announced
2004
2021
Description
N/A
N/A
Display
Size
3.5"
2.8"
Type
TFT resistive touchscreen, 65K colors
TFT LCD
Resolution
240 x 320 pixels, 4:3 ratio (~114 ppi density)
240 x 320 pixels, 4:3 ratio (~143 ppi density)
PPI
240
240
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
N/A
N/A
Performance
Chipset
N/A
Qualcomm SM6115 Snapdragon 662 (11 nm)
CPU
Intel Xscale PXA272 520 MHz
Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU
N/A
Adreno 610
Memory
128MB RAM
16GB 2GB RAM
Expandable Storage
✗
✗
Card Slot
SDIO/MMC
microSDXC (dedicated slot)
Camera
Main Camera
N/A
8 MP
Main Camera Features
N/A
LED flash
Front Camera
N/A
N/A
Front Camera Features
N/A
N/A
Video Recording
N/A
N/A
Selfie Video
N/A
N/A
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
N/A
2300 mAh
Battery Details
Removable Li-Ion battery
Li-Ion 2300 mAh, removable
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
125 x 71 x 18 mm (4.92 x 2.80 x 0.71 in)
116 x 60 x 28 mm (4.57 x 2.36 x 1.10 in)
Weight
210 g
220 g
Materials
N/A
N/A
Colors
Silver
Black
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Mini-SIM
Nano-SIM
Network
GSM
GSM / HSPA / LTE
Network Speed
N/A
HSPA, LTE
5G
✗
✗
4G
✗
✓
WiFi
Wi-Fi 802.11b
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
Yes
5.0, A2DP, LE
NFC
✗
✗
USB
Proprietary
USB Type-C
IR Blaster
✗
✗
Headphone Jack
✗
✓
Radio
✗
✗
Positioning
No
GPS, GLONASS, GALILEO
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
No
Yes
Software & Security
Operating System
Microsoft Windows Mobile 2003 SE PocketPC
Sonim OS (based on AOSP Android 11)
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
N/A
Accelerometer, barometer

