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Pixel 4

The 4 is a line of smartphones developed and marketed by as part of its Pixel hardware series, featuring the standard Pixel 4 and larger Pixel 4 XL models that emphasize advanced , a smooth 90Hz display, and integration with Google's services. Announced on October 15, 2019, during a Made by Google event, the devices launched for purchase in the United States on , 2019, with availability expanding to other regions shortly thereafter. The Pixel 4 features a 5.7-inch display with Full HD+ resolution and a 90Hz for fluid scrolling, powered by the 855 chipset paired with 6GB of RAM, while the Pixel 4 XL upgrades to a 6.3-inch QHD+ panel. Both models run out of the box, with support extended to via over-the-air updates, and offer storage options of 64GB or 128GB without expandable memory. Key hardware highlights include a dual-camera system on the rear with a 12.2-megapixel main and a 16-megapixel , enabling features like Super Res Zoom and Night Sight for low-light , alongside a front-facing 8-megapixel camera supporting facial recognition via sensors and a dot projector, alongside a dedicated Soli radar for gesture-based interactions and enhanced unlocking. capacities are 2,800mAh for the Pixel 4 and 3,700mAh for the XL, supporting 18W fast charging and wireless charging, though the series drew criticism for omitting features like a headphone jack and water resistance certification. The Pixel 4 series represented Google's offering, starting at $799 for the base model, and introduced innovations like the customizable Ambient EQ display tuning and enhanced voice interaction with , solidifying its position as a showcase for stock and capabilities.

Development and release

Announcement and development

Google unveiled the Pixel 4 and Pixel 4 XL at its Made by Google hardware event on October 15, 2019, in , marking the company's annual showcase for new devices including smartphones, smart home products, and accessories. Development of the Pixel 4 emphasized the integration of Google's Project Soli radar technology to enable touchless gesture controls, a feature years in the making through the company's Advanced Technology and Projects (ATAP) division. The device also relied on a partnership with , incorporating the Snapdragon 855 chipset as its core processor to support enhanced processing capabilities. Leading up to the announcement, the Pixel 4 was one of the most leaked smartphones in history, with details emerging from renders, photos, and certification filings as early as June 2019, including early demonstrations of Motion Sense gesture functionality in testing. Strategically, Google positioned the Pixel 4 as a departure from prior models by prioritizing bold AI-driven hardware innovations, such as radar-based interactions and advanced , over modest iterative improvements to compete more directly with premium devices from Apple and . Motion Sense served as a example of this focus on novel paradigms.

Launch and availability

The Google 4 and Pixel 4 XL were released on October 24, 2019, in the United States and select international markets including , the , , , and . Pre-orders for the devices opened on October 15, 2019, immediately following their announcement at Google's Made by Google event. This launch marked the first time the Pixel lineup was available through all major U.S. wireless carriers, including , , , and Sprint, with financing options such as $33 per month over 24 months for the base model on . Pricing started at $799 for the 64 GB Pixel 4 and $899 for the 64 GB Pixel 4 XL, with 128 GB upgrades adding $100 to each model; the devices were sold unlocked via the , , and , alongside carrier channels. Storage options were limited to 64 GB and 128 GB configurations, with no expandable storage support. Availability expanded to additional European countries like and , as well as Asian markets including and , starting in late October 2019, though rollout varied by region with some areas seeing stock in early November. Google's marketing for the launch emphasized the smartphones' pure experience, promising three years of OS updates and immediate access to new features, alongside exclusive innovations like Motion Sense gesture controls powered by radar technology. Campaigns positioned the Pixel 4 as a premium device focused on seamless integration of hardware and software, with promotional materials highlighting its camera capabilities and AI-driven assistance in everyday tasks.

Hardware specifications

Design and build

The Google Pixel 4 measures 147.1 x 68.8 x 8.2 mm and weighs 162 g, while the Pixel 4 XL is larger at 160.4 x 75.1 x 8.2 mm and 193 g, providing a compact for the standard model and a more spacious alternative in the XL variant. Both devices feature an aluminum frame sandwiched between Gorilla Glass 5 on the front and back, offering a premium yet durable construction with IP68 dust and water resistance, capable of submersion in up to 1.5 meters of freshwater for 30 minutes. Available in Just Black, Clearly White, and Oh So Orange, the phones showcase a distinctive two-tone rear , where the upper portion around the camera module contrasts with the main body for a visually striking appearance. Key design evolutions include the elimination of the rear-mounted fingerprint , replaced by an optical in-display on the front, and an enlarged horizontal camera bar on the back that houses the dual rear lenses and , enhancing the device's and camera prominence. The top bezel incorporates the Motion Sense module for controls, contributing to the phone's modern, bezel-heavy aesthetic.

Display and input

The 4 features a 5.7-inch P-OLED with a of 1080 × 2280 pixels, delivering a of 444 pixels per inch. The Pixel 4 XL upgrades to a 6.3-inch P-OLED panel with a 1440 × 3040-pixel and 537 pixels per inch density. Both screens incorporate support for enhanced in compatible content and a 90 Hz via the Smooth Display feature, enabling fluid scrolling and animations while optimizing battery life by dynamically adjusting between 60 Hz and 90 Hz. These displays achieve a maximum brightness of 444 nits across full-screen content, providing adequate visibility in various lighting conditions despite not leading in peak compared to contemporaries. The punch-hole design integrates the front camera module at the top center, contributing to an approximately 80% screen-to-body ratio without a traditional bezel-heavy setup. Complementing this, automatically calibrates the screen's and white balance to match , mimicking natural paper-like viewing for reduced eye fatigue across environments. For user input, the Pixel 4 series employs face unlock as its sole biometric method, leveraging dual front-facing cameras, an infrared dot projector, and a flood illuminator to create a facial map for secure authentication, including in low-light scenarios. This system supports attention awareness, requiring the user to be looking at the screen for actions like notifications, and extends to app-specific secure access without a physical sensor.

Processor, memory, and storage

The Google Pixel 4 features the 855 system-on-chip (), fabricated on a node. This octa-core processor consists of one 485 prime core clocked at up to 2.84 GHz, three performance cores at 2.42 GHz, and four efficiency cores at 1.78 GHz, paired with an Adreno 640 () for handling graphics-intensive tasks. It includes 6 GB of LPDDR4X (), which supports efficient multitasking and application performance typical for flagship devices of its era. Storage options are 64 GB or 128 GB of internal UFS 2.1 , with no support for expandable storage via microSD cards, prioritizing faster read and write speeds over capacity flexibility. In performance benchmarks, the Pixel 4 achieved an initial score of approximately 425,000, reflecting strong overall system capabilities driven by the Snapdragon 855, though real-world results varied based on software tuning.

Cameras and imaging

The 4 is equipped with a dual rear camera setup, featuring a 12.2-megapixel primary wide-angle sensor with an f/1.7 , 1/2.55-inch sensor size, 1.4 µm pixel pitch, dual pixel phase detection (PDAF), and optical image stabilization (). This is complemented by a 16-megapixel with an f/2.4 , 1/3.6-inch sensor size, 1.0 µm pixels, PDAF, , and 2x optical zoom for enhanced detail in zoomed shots. The rear camera array also incorporates a and sensor, which detects artificial light flicker rates to automatically adjust and minimize banding artifacts in photos taken under fluorescent or LED lighting. A dual-LED dual-tone provides balanced illumination for low-light scenarios. On the front, the Pixel 4 includes an 8-megapixel selfie camera with an f/2.0 , 1/3.24-inch size, 1.22 µm pixels, fixed , and a 90° to capture wider group shots. It is paired with an dot , dual cameras, and a flood illuminator for depth sensing that aids in effects and secure . Imaging capabilities are bolstered by hardware-supported features such as Night Sight for computational low-light enhancement, Super Res Zoom combining the telephoto hardware with multi-frame processing for hybrid zoom up to 8x, and mode for long-exposure captures of starry skies and celestial objects. Video recording supports UHD at 30 and Full HD at 60 , with gyro-electronic (EIS) for smoother footage. These elements integrate with AI-driven processing for improved dynamic range and detail.

Battery and charging

The Google Pixel 4 is equipped with a non-removable 2800 mAh Li-Po , while the Pixel 4 features a larger 3700 mAh Li-Po . These capacities were designed to support the devices' high-refresh-rate displays and radar-based features, though they drew criticism for being relatively modest compared to contemporaries. Charging options for the Pixel 4 series include 18 W wired fast charging via USB Power Delivery 2.0 through the port, along with Qi-compatible wireless charging at up to 11 W when using Extended Power Profile (EPP)-certified pads. The retail box contains an 18 W power adapter, a cable, and a Quick Switch Adapter, enabling users to achieve a full charge in approximately 1 hour 40 minutes for the standard model under optimal conditions. Unlike later models, the Pixel 4 and 4 XL do not support reverse wireless charging, limiting their utility as power sources for accessories. To enhance battery efficiency, the Pixel 4 incorporates Adaptive Battery, an AI-driven feature that uses to analyze usage patterns and prioritize power allocation to frequently used apps while restricting background activity for others. This helps mitigate the impact of power-intensive elements like the 90 Hz display and Motion Sense radar, potentially extending daily usability without manual intervention. In real-world mixed-usage scenarios, including web browsing, video streaming, and , the Pixel 4 typically delivers 4 to 5 hours of screen-on time, while the Pixel 4 achieves 5 to 6 hours before requiring a recharge. Lab tests corroborate this, estimating overall endurance at around 62 hours for the standard model under varied loads, though heavy use can reduce it to a single day.

Software and features

Operating system and updates

The Google Pixel 4 was released in October 2019 with as its initial operating system, which introduced several Pixel-exclusive features powered by on-device . Key among these were Live Caption, an accessibility tool that provides real-time captions for media playback, phone calls, and video calls without requiring an internet connection, and Call Screening, which uses AI to automatically answer and transcribe incoming calls to help users avoid spam. Additional custom features included the always-on Now Playing music recognition, which passively identifies songs playing nearby and displays them on the lock screen or ambient display, and Priority Mode within the Do Not Disturb settings, allowing users to filter notifications to emphasize high-priority alerts such as those from starred contacts while silencing others. Google committed to providing three years of major Android OS updates and three years of monthly security patches for the Pixel 4, starting from its launch date of October 15, 2019. This policy ensured the device progressed through in 2020, in 2021, and culminated with in October 2022, which included enhancements like improved privacy controls and themed icons but marked the final major OS upgrade. Security support, including patches for vulnerabilities in the Android framework and Pixel-specific components, also concluded on October 31, 2022, after which no official updates were issued. As of 2025, the Pixel 4 receives no further official software updates from , leaving it exposed to emerging security vulnerabilities without vendor patches, which increases risks from , exploits, and unaddressed flaws in the underlying codebase. However, community-developed custom ROMs, such as those based on , continue to offer extended support with newer Android versions like 14 or 15, security backports, and feature enhancements for users willing to unlock the and sideload software, though these carry potential stability and warranty implications.

Motion Sense technology

Motion Sense is a radar-based introduced on the 4 and Pixel 4 XL smartphones, powered by the company's Soli technology. The Soli sensor is a compact 60 GHz frequency-modulated chip, measuring 5 mm by 6.5 mm by 0.873 mm, with integrated antennas embedded in the device's front . This mini-radar enables contactless interactions by detecting fine hand movements, presence, and reach within a close-proximity range of approximately 30 cm, using sub-millimeter resolution to track range, velocity, and 3D position through reflected electromagnetic waves. Unlike traditional touch or camera-based inputs, Soli operates efficiently even when the phone's main processor is idle, processing signals via the device's (DSP) for low-latency responses. Project Soli originated from Google's Advanced Technology and Projects (ATAP) lab, with initial prototypes developed in 2014 and publicly demonstrated at in 2015 as a novel approach to touchless interfaces. The technology evolved through custom algorithms to interpret complex motions, culminating in its commercial debut on the Pixel 4 in 2019 as the first integrated short-range radar in a consumer . To enable deployment, Google secured a waiver from the U.S. (FCC) in December 2018, allowing the Soli chip to operate at higher power levels within the 57-64 GHz unlicensed spectrum band while minimizing interference risks. Power consumption is optimized at around 5 mW, significantly lower than comparable camera systems, enabling always-on functionality without substantial battery drain. The system supports a limited set of intuitive gestures designed for quick, hands-free actions, including waving a hand to snooze alarms or silence incoming calls and notifications, reaching toward the screen to wake the device and activate Face Unlock, and swiping left or right to skip music tracks in supported media apps. These interactions rely on three core detection modes—presence (to turn on the when a user approaches), reach (for proximity-based triggers), and explicit gestures (for directional swipes)—processed in to filter out unintended motions like phone vibrations. However, Motion Sense has notable limitations: it does not support full navigation control, such as scrolling or menu selection, and its accuracy can be affected by extraneous movements or environmental factors, restricting it to simple, predefined commands rather than broad input replacement. Due to regulatory constraints on radar frequency usage, Motion Sense is not available in all markets; it auto-disables when traveling to unsupported regions to comply with local spectrum rules. The feature launched in select countries including the , , , , , , , , , , and the , but was notably absent in and initially restricted in because the 60 GHz band is either unlicensed with power limits or reserved for other uses in those areas. Google has indicated potential expansion through future regulatory approvals and software updates.

Audio and connectivity features

The Google Pixel 4 features dual front-firing speakers tuned for enhanced audio output, providing immersive sound without a traditional 3.5mm headphone jack, which encourages wireless audio solutions. These speakers incorporate separate amplifiers and support spatial audio processing for a more dimensional listening experience, particularly in media playback. In terms of connectivity, the Pixel 4 supports with dual-band operation on 2.4 GHz and 5 GHz frequencies, enabling reliable wireless networking and features like . It includes with advanced codecs such as for high-quality audio streaming to compatible devices, alongside for contactless payments and data transfer. Cellular connectivity relies on , offering download speeds up to 1.2 Gbps and upload speeds up to 150 Mbps, with capability for flexible carrier activation without a physical nano-SIM in some configurations. The device lacks support, as Google determined the technology was not yet mature for consumer deployment at launch. Additional connectivity hardware includes USB Type-C 3.1 for fast data transfer and charging, as well as dual-band GPS with support for , Galileo, and for precise location tracking. Security is bolstered by the integrated Titan M chip, a custom hardware module that handles secure boot processes to verify system integrity and safeguards sensitive operations like payments through isolated credential storage.

Reception and legacy

Critical reviews

The Google Pixel 4 received generally positive reviews upon its October 2019 launch, with critics praising its capabilities, smooth software experience, and innovative features like Motion Sense, though it faced criticism for hardware compromises that positioned it as a premium device with mid-range elements at a price of $799. Reviewers highlighted the phone's ability to deliver a pure ecosystem enhanced by exclusive features, setting it apart in a market dominated by more feature-packed rivals. Critics universally lauded the Pixel 4's camera system as one of the best available, thanks to its 12.2-megapixel main and 16-megapixel , which excelled in low-light conditions with Night Sight and the new astrophotography mode, producing detailed images that outperformed many competitors in and color accuracy. The Verge noted the delivered "remarkable" 2x optical zoom results, while described it as "one of the best cameras around," particularly for its ability to capture brilliant photos in challenging scenarios. called it the "class-leading" camera on any , emphasizing software-driven enhancements like Super Res Zoom that rivaled more advanced setups. The clean, stock experience was another strong point, with reviewers appreciating the intuitive interface, timely updates, and AI-powered tools like the faster , Live Caption for real-time subtitles, and the Recorder app for automatic transcription. The 90Hz display contributed to fluid animations and scrolling, making navigation feel "gloriously smooth" according to , comparable to high-end devices like the 7T. Motion Sense, Google's radar-based gesture controls, was innovative for enabling touchless interactions such as skipping tracks or silencing alarms, reducing "friction" in daily use as per The Verge, though some found its practical applications limited. Face Unlock was also a highlight, praised for its speed and security, working "instantaneously" even in low light. On the downside, battery life was a major , with the 2,800mAh lasting only about 10 hours of video playback or less than a full day of mixed use, draining faster than peers and prompting frequent charging. reported it underperformed against the 11's 15.5 hours, while noted under 3 hours of screen-on time for the base model, calling it a "dumb decision" that degraded further over time. The drew mixed reactions, with large bezels—particularly the prominent top one housing the speakers and —appearing dated and asymmetrical compared to slimmer competitors, as pointed out in its assessment of the "big camera squares" trend. Additionally, the 6GB of was seen as insufficient for future-proofing, lagging behind the 8GB or more in rivals like the , leading to concerns about multitasking and longevity. In comparisons, the Pixel 4 was often positioned against the and S10, where it shone in software purity and camera software but fell short in battery endurance and hardware versatility—the offered superior all-day battery and Night mode video, while the provided more , expandable storage, and faster wireless charging. critiqued these trade-offs as making the Pixel 4 feel "out of touch" at its . Aggregated scores reflected this balance, with an average of around 8.1/10 across major outlets, including 8/10 from The Verge, 8.2/10 from , 4.5/5 from , and 7.8/10 from . In the smartphone landscape, the Pixel 4 was viewed as a strong contender for users prioritizing and Google's over raw specs, effectively bridging premium and mid-range segments despite its flagship pricing, though some reviewers like those at PhoneArena deemed it the "worst value" due to omitted features like wireless charging speeds and storage expandability.

Sales and market impact

The 4 achieved approximately 2 million units sold in its first six months following its October 2019 launch, marking an underperformance relative to the , which sold around 3.5 million units in its initial two quarters. Lifetime sales for the Pixel 4 are estimated at about 5.5 million units, contributing to Google's overall Pixel shipments of 7.2 million in 2019, a figure that represented roughly 0.4% of the global market. In terms of , the Pixel 4 helped capture 2-3% of the U.S. premium smartphone segment during late 2019 and 2020, bolstered by its reputation for superior that resonated in markets like , where camera quality is a key purchase factor. The device's sales were constrained by factors such as its high pricing and limited availability of , yet it demonstrated Google's growing foothold in niche segments focused on software-driven experiences over raw hardware specs. The Pixel 4's commercial results influenced Google's subsequent strategy, accelerating the shift to integration in the and adopting a slimmer, bezel-minimized to mitigate feedback on the Pixel 4's prominent "forehead" for Motion Sense. By 2025, the Pixel 4 maintains a dedicated following among enthusiasts for its unadulterated implementation and pioneering features, though it has been eclipsed by later models emphasizing advancements and broader market appeal.

Long-term support and discontinuation

The Google Pixel 4 received security updates through October 2022, marking the end of official support from . The device's last major feature drop arrived as part of the update in 2022. Following the cessation of official updates, the Pixel 4 has faced heightened vulnerability to security exploits, as unpatched vulnerabilities accumulate over time without manufacturer intervention. To mitigate these risks and extend usability, many users turn to custom ROMs such as , which provides ongoing security patches and upgrades up to Android 15 for the Pixel 4. Google discontinued the Pixel 4 lineup shortly after its launch, with no additional variants or refreshes produced thereafter. By November 2025, the resale value for used Pixel 4 units in good condition typically ranges from $100 to $200, reflecting its age and lack of ongoing . Despite its discontinuation, the Pixel 4's Motion Sense technology—powered by radar-based gesture controls—laid groundwork for AI-driven interaction features in subsequent Pixel generations, such as adaptive audio and contextual computing. However, the device's limited three-year window drew criticism for falling short of standards, particularly when compared to Samsung's of four years of OS upgrades and five years of updates for devices starting around 2020.

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