Price and specifications of Allview X4 Xtreme advantages, disadvantages, and a comprehensive explanation

Network and Connectivity

The Allview X4 Xtreme, released in June 2017, supports a wide range of network technologies that include GSM, HSPA, and LTE. It's built to work on multiple frequency bands, making it compatible with a variety of networks globally. The device can operate on 2G bands such as GSM 850/900/1800/1900 for both SIM 1 and SIM 2, 3G bands like HSDPA 850/900/1900/2100, and has unspecified support for 4G bands under LTE, reaching speeds of up to 300/50 Mbps with LTE Cat6 support.

Design and Build

In terms of design, the X4 Xtreme is substantial with dimensions of 166.4 x 83.3 x 9.1 mm, giving it a solid and robust feel. Despite its considerable size, the weight of 226.9 g adds to the sturdiness while potentially impacting long-term handheld comfort. The device supports a Hybrid Dual SIM configuration, allowing users to switch between having two SIM cards or using one of the slots for additional storage via microSDXC.

Display

The phone features a 6.0-inch IPS LCD screen, which covers approximately 71.6% of the device's front surface. This display provides a resolution of 1080 x 1920 pixels and a 16:9 aspect ratio, ensuring a decent pixel density of around 367 pixels per inch. The screen is protected by Corning Gorilla Glass 3, affording some resistance to scratches and minor impacts.

Operating System and Performance

Powered by Android 7.0 Nougat, the Allview X4 Xtreme ensures a fairly modern user experience with access to a wide library of applications available on the Google Play Store. The device is built on a Mediatek MT6757T Helio P25 chipset, featuring an octa-core CPU configuration with 4x2.5 GHz Cortex-A53 cores and 4x1.4 GHz Cortex-A53 cores. The integrated Mali-T880MP2 GPU manages graphics performance, proving adequate for everyday tasks and moderate gaming.

Memory and Storage

Memory specifications for the X4 Xtreme include 4GB of RAM paired with 64GB of internal storage. This configuration should support multitasking and store a reasonable amount of applications and media files. For users requiring additional storage, the device offers a microSDXC slot, albeit one that is shared with the SIM slot, which means users have to choose between dual SIM functionality or extra storage.

Camera

The main camera system of this device is dual-lens, consisting of a 13 MP primary lens with phase detection autofocus, and a 5 MP lens dedicated to capturing depth information. Features such as LED flash, HDR, and panorama mode enhance the photographic experience. For video enthusiasts, the camera can record at 1080p resolution at 30 frames per second.

On the front, the device boasts a high-resolution 20 MP selfie camera with a f/2.0 aperture, providing clear and wide-angle shots. Although the selfie camera does not support video recording, the quality of still images is high enough to satisfy most users.

Sound and Audio

The X4 Xtreme incorporates a loudspeaker for media playback and calls, and it retains a 3.5mm headphone jack, a feature that's becoming rare in modern smartphones. This allows users to easily connect wired headphones without the need for adapters.

Connectivity Features

The device includes a standard range of connectivity options such as Wi-Fi 802.11 a/b/g/n, Bluetooth 4.0 with A2DP and EDR, and GPS. While the device does not support NFC, it does offer FM radio and uses a microUSB 2.0 port for charging and data transfer.

Sensors

The Allview X4 Xtreme comes equipped with a variety of sensors to enhance usability and ensure security. This includes a fingerprint sensor located on the front, accelerometer, gyro, proximity sensor, and a compass. These sensors are designed to provide a secure and interactive user experience.

Battery Life

A standout feature of the X4 Xtreme is its large non-removable Li-Po 4550 mAh battery. This battery provides an impressive standby time of up to 379 hours and up to 25 hours of talk time, ensuring that users can stay connected without frequent recharging.

Miscellaneous Features

Finally, for those interested in aesthetics, the device is available in a Mocha Gold color. Moreover, the SAR value for European models is rated at 1.01 W/kg (head), reflecting its compliance with safety standards for electromagnetic radiation.