Itel S25 Ultra 256GB

The Itel S25 Ultra 256GB has a non-folding, standard-form design measuring 164.2 mm tall, 76.4 mm wide, and just 6.9 mm thick, with a total volume of approximately 86.56 cm³ and a weight of 163 g. It carries an IP64 rating, meaning it offers solid protection against dust ingress and resistance to water splashing from any direction, though it is not built to rugged or fully submersible standards.

The Itel S25 Ultra 256GB features a 6.78″ OLED/AMOLED touchscreen with a resolution of 1080 x 2436 px and a pixel density of 393 ppi, delivering a 120Hz refresh rate and an exceptionally responsive touch sampling rate of 1500Hz. Typical brightness reaches 1000 nits, and the display is protected by Gorilla Glass 7i, providing reliable resistance against everyday scratches and impacts. An Always-On Display mode is supported, while HDR10, HDR10+, Dolby Vision, and a secondary screen are not part of this device's display setup.

The Itel S25 Ultra 256GB is powered by a Unisoc T620 chipset with an octa-core CPU running at 8 x 1.9 GHz, fully supporting 64-bit processing. It comes with 8 GB of RAM operating at 1866 MHz alongside 256 GB of internal storage, providing a reasonable amount of space for apps, media, and files. The device achieves an AnTuTu benchmark score of 328,002, reflecting its overall processing and graphics capability in day-to-day tasks.

The Itel S25 Ultra 256GB sports a dual-lens rear camera system led by a 50 MP main sensor with an f/2.4 aperture, a pixel size of 0.64 µm, and a CMOS sensor without back-side illumination. Autofocus options include phase-detection and touch autofocus, as well as continuous autofocus during video recording, though laser autofocus is not present. Video capture tops out at 1440 x 30 fps, with slow-motion recording also supported, while HDR10 and Dolby Vision recording are not available. Manual controls cover exposure, ISO, focus, and white balance, though manual shutter speed is absent, and the camera handles burst mode, panoramas, and timelapse as well. A single LED flash is fitted at the rear — there is no dual-tone or RGB flash — and the rear system offers no optical zoom. On the front, a 32 MP single-lens camera with an f/2.0 aperture handles selfies, without a front flash or under-display placement, and 3D photo and video recording is not supported on either camera.

The Itel S25 Ultra 256GB runs Android 14 and covers a broad range of software features across privacy, usability, and personalization. On the privacy front, it includes clipboard warnings, location privacy options, camera and microphone access controls, and the ability to block app tracking, though Mail Privacy Protection and cross-site tracking blocking are not present. The interface supports theme customization, dynamic theming, dark mode, and an extra dim mode, while focus modes and app offloading are not available. Productivity is aided by split-screen multitasking, Picture-in-Picture, full-page screenshots, a media picker, customizable notifications, sharing intents, widgets, and the ability to play games while they download. The system also features on-device machine learning, Live Text, offline voice recognition, voice commands, phone tracking, multi-user support, a child lock, and a battery health check. OS updates do not come directly from the vendor, and Quick Start and Wi-Fi password sharing are not supported, nor can the device be used as a PC.

The Itel S25 Ultra 256GB is equipped with a 5000 mAh rechargeable, non-removable battery that supports 18W wired fast charging, allowing for reasonably quick top-ups via cable. Wireless charging is not available on this device. A battery level indicator is built in, keeping users informed of remaining charge at a glance.

The Itel S25 Ultra 256GB includes stereo speakers for audio playback, but does not feature a 3.5 mm headphone jack, so wired headphone use would require an adapter. On the wireless audio side, none of the advanced Bluetooth codec standards — aptX, aptX HD, aptX Adaptive, aptX Lossless, or LDAC — are supported.

The Itel S25 Ultra 256GB supports dual-SIM cellular connectivity but is limited to 4G, with no 5G support, and offers download speeds of up to 300 Mbit/s and upload speeds of up to 150 Mbit/s. Wireless options include Wi-Fi, Bluetooth 5.0, and NFC, while DLNA certification and ANT+ are absent. The device connects via a USB Type-C port running USB 2.0, and an external memory slot is available for storage expansion. For navigation, GPS and Galileo are both supported. Security is handled by a fingerprint scanner, while 3D facial recognition and an iris scanner are not present. The sensor suite includes an accelerometer, though a barometer, infrared sensor, heart rate monitor, and motion or optical tracking are not featured. Emergency SOS via satellite, crash detection, HDMI output, a built-in projector, and a stylus are likewise not part of this device's feature set.

The Itel S25 Ultra 256GB features a curved display and includes a video light for use during recording. The screen uses neither sapphire glass nor e-paper technology.