# Sony Ericsson Xperia X1

> smartphone model

**Wikidata**: [Q1061068](https://www.wikidata.org/wiki/Q1061068)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sony_Ericsson_Xperia_X1)  
**Source**: https://4ort.xyz/entity/sony-ericsson-xperia-x1

## Summary
The Sony Ericsson Xperia X1 is a slider-style smartphone that ran Windows Mobile 6.1, marking the first time Sony Ericsson used this operating system. Released as part of the Xperia series, it featured a 256 MB storage capacity and supported SD card expansion, making it a notable device in early smartphone evolution.

## Key Facts
- **Operating System**: Ran Windows Mobile 6.1, a first for Sony Ericsson.
- **Storage Capacity**: 256 MB internal storage with SD card support.
- **Form Factor**: Slider design, distinguishing it from contemporary clamshell phones.
- **Dimensions**: Measured 52.6 mm (width) × 110.5 mm (height) × 17.0 mm (thickness).
- **Weight**: 145 grams.
- **Predecessor**: Followed the Sony Ericsson P1.
- **Successor**: Preceded the Sony Ericsson Xperia X2.
- **Manufacturer**: Produced by Sony Mobile Communications.
- **Part of Series**: Belongs to the Sony Xperia product line.
- **Country of Origin**: United States.

## FAQs
### Q: What operating system did the Xperia X1 use?
A: The Xperia X1 ran Windows Mobile 6.1, which was a first for Sony Ericsson at the time.

### Q: What was unique about the Xperia X1's design?
A: The Xperia X1 featured a slider form factor, which was less common than clamshell designs in early smartphones.

### Q: How much storage did the Xperia X1 have?
A: It had 256 MB of internal storage and supported SD card expansion for additional storage.

### Q: What was the Xperia X1's predecessor and successor?
A: It followed the Sony Ericsson P1 and was succeeded by the Sony Ericsson Xperia X2.

### Q: What was the Xperia X1's weight and dimensions?
A: The Xperia X1 weighed 145 grams and measured 52.6 mm (width) × 110.5 mm (height) × 17.0 mm (thickness).

## Why It Matters
The Sony Ericsson Xperia X1 was significant as it introduced Windows Mobile 6.1 to Sony Ericsson’s lineup, a move that set it apart from competitors using Symbian or proprietary operating systems. Its slider design, though less common than clamshell phones at the time, offered a unique user experience. The device also featured a modest 256 MB of storage, which was typical for early smartphones but supported by SD card expansion. As part of the Xperia series, the X1 contributed to Sony Ericsson’s efforts to position itself as a premium smartphone brand. Its release marked an evolution in the company’s approach to operating systems and design, influencing later models in the series.

## Notable For
- **First Windows Mobile 6.1 Device**: The X1 was the first Sony Ericsson smartphone to run Windows Mobile 6.1.
- **Slider Design**: Its slider form factor was a distinctive feature compared to contemporary clamshell phones.
- **Storage Capacity**: Offered 256 MB of internal storage with SD card support, common for early smartphones.
- **Xperia Series Entry**: One of the earliest models in the Sony Xperia product line.
- **Operating System Transition**: Represented Sony Ericsson’s shift towards Windows Mobile, diverging from Symbian.

## Body
### Design and Form Factor
The Sony Ericsson Xperia X1 featured a slider design, which was less common than clamshell phones at the time. Its dimensions were 52.6 mm in width, 110.5 mm in height, and 17.0 mm in thickness, weighing 145 grams. The slider mechanism allowed for a larger display when in use, though it was not as seamless as later sliding designs.

### Operating System
The X1 ran Windows Mobile 6.1, marking the first time Sony Ericsson used this operating system. Unlike competitors like Samsung or HTC, which also used Windows Mobile, the X1 required users to navigate through Windows menus, which was a notable difference in user experience.

### Storage and Expansion
The device had 256 MB of internal storage, which was typical for early smartphones. It supported SD card expansion, allowing users to increase storage capacity as needed.

### Series and Positioning
The Xperia X1 was part of the Sony Xperia series and followed the Sony Ericsson P1. It was succeeded by the Sony Ericsson Xperia X2, indicating its role as an early model in the series.

### Market Context
The Xperia X1 was released in the United States and contributed to Sony Ericsson’s efforts to establish itself as a premium smartphone brand. Its features and design reflected the company’s strategy to compete with other manufacturers in the evolving smartphone market.

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## References

1. [The Register](https://www.theregister.com/2008/10/22/review_smartphone_sony_ericsson_xperia_x1/?page=2)
2. Freebase Data Dumps. 2013
3. [M3](https://www.m3.se/article/1837786/xperia-x1-the-worlds-first-full-review.html)