The LG U400 was released in July 2006, aiming to strike a balance between functionality and innovation. Often considered a mid-range device of its time, this feature phone by LG offered several compelling features to its users. Despite being discontinued, the LG U400 remains a device of historical significance in the evolution of mobile phones.
The dimensions of the LG U400 are 99.8 x 48 x 20.4 mm, and it weighs 114 grams. The device showcases a robust and sleek design typical of early feature phones. With a compact build and a mini-SIM card slot, the LG U400 was quite portable, allowing users to enjoy its functionalities without the encumbrance of bulkiness. Available in classic black and silver colors, it provided a simple yet professional look.
The LG U400 features a 2.0-inch TFT display capable of showing 256K colors with a resolution of 240 x 320 pixels, offering decent clarity and color reproduction for the time. The compact screen, while smaller than modern devices, was sufficient for basic tasks and displaying clear visuals, making it suitable for all types of users.
Equipped with a 2 MP main camera, the LG U400 allowed users to capture images and videos. Although modest by today's standards, it was competitive in the mid-2000s market. Additionally, a VGA front-facing camera facilitated video calls, an innovative feature during that period, showcasing LG’s effort to push mobile technology forward in usability.
The LG U400 incorporated a microSD card slot for additional storage, facilitating expanded memory to accommodate various media files and applications. Users could maintain up to 40 dialed, received, and missed calls in their call records. The presence of a photo call feature enhanced the utility of the built-in phonebook.
Created for the user who needed essential communication tools and some multimedia functionality, the LG U400 ran on a basic operating system typical of feature phones. It supported Java MIDP 2.0, enabling the installation of light applications and games. Messaging capabilities included SMS, EMS, MMS, and Email, providing users with multiple channels for communication.
The LG U400 was designed to operate on GSM 900/1800/1900 and UMTS 2100 frequencies. It supported 3G connectivity with speeds up to 384 kbps, which was quite advanced for its time. Bluetooth 2.0 with A2DP support allowed for wireless audio streaming and file transfers, but the absence of WLAN, radio, and GPS limited its connectivity options. Data transfer via USB required a proprietary connection cable.
The device featured a loudspeaker and supported vibration and downloadable polyphonic ringtones. Although it lacked a 3.5mm headphone jack, Bluetooth A2DP allowed users to connect wireless headphones. The lack of radio functionality necessitated reliance on pre-downloaded media or streaming via compatible Bluetooth devices.
The LG U400 was powered by a removable Li-Ion battery with a capacity of 1530mAh. This was standard for feature phones of that era and provided sufficient power for basic daily use, including calls, messaging, and playing media. The removable battery design also meant that users could carry spares for extended usage without access to charging facilities.
The LG U400 stands as a significant device from the mid-2000s, offering a blend of essential communication features and basic multimedia capabilities. It highlighted the technological advancements of the time, such as the integration of video calling and 3G connectivity into mainstream mobile devices. While it lacks the advanced features of contemporary smartphones, the LG U400 remains a nostalgic reminder of a pivotal era in mobile technology evolution.
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