WCN 3990 Mobile Phone IC

The WCN 3990 Mobile Phone IC is a high-performing integrated circuit designed to elevate your smartphone’s connectivity and overall functionality. As a critical component in mobile devices, it ensures seamless wireless communication by simplifying complex operations. Built on modern technology standards, this IC is renowned for exceptional reliability and efficiency. Whether you’re designing a new smartphone or upgrading existing hardware, the WCN 3990 delivers unmatched performance and versatility. WCN 3990 Mobile Phone IC

Top-Tier Performance and Compatibility

With its advanced design, the WCN 3990 IC guarantees optimum efficiency in wireless communication. Its compact footprint and integration capabilities make it the go-to component for manufacturers seeking to enhance mobile phone capabilities without compromising on space. Compatible with a wide range of devices, this IC is tailored to support modern smartphone functionalities such as Bluetooth, Wi-Fi, and GPS connectivity.

Designed for Energy Efficiency

The WCN 3990 boasts an optimized energy profile, which significantly reduces power consumption without affecting performance. This efficiency makes it ideal for mobile phone manufacturers aiming to create devices with extended battery life. Its ability to manage tasks with reduced energy usage ensures sustainability while maintaining high-speed data transfer and connectivity stability.

Why Choose the WCN 3990 Mobile Phone IC?

Choosing the WCN 3990 means investing in technology that supports fast data processing, reliable connectivity, and energy efficiency. Its precision-engineered architecture mitigates signal interference, ensuring uninterrupted communication for users. Whether you’re a business in the smartphone supply chain or looking for critical infrastructure components, the WCN 3990 delivers the ideal solution for modern mobile devices.

The WCN 3990 Mobile Phone IC combines cutting-edge technology with practical benefits for manufacturers and end-users alike. Enhance your devices with this industry-leading integrated circuit, designed to meet today’s demanding connectivity and performance standards. Upgrade your solution today and experience the difference in quality with the WCN 3990.

The WCN3990 is a highly integrated, single-die connectivity Integrated Circuit (IC) developed by Qualcomm. It is a cornerstone of the “FastConnect” 5900 series, designed to provide high-performance Wi-Fi and Bluetooth capabilities for mid-to-high-end mobile devices, tablets, and IoT hardware. WCN 3990 Mobile Phone IC`

Primarily paired with processors like the Snapdragon 835, 845, and 660, it is famous for introducing advanced 2×2 MIMO technology into mainstream mobile platforms. WCN 3990 Mobile Phone IC

Technical Specifications: Qualcomm WCN3990

Feature	Specification Details
IC Category	Wireless Connectivity SoC (System-on-Chip)
Wi-Fi Standards	IEEE 802.11a/b/g/n/ac (Wi-Fi 5)
Wi-Fi Frequency Bands	Dual-band (2.4 GHz and 5 GHz)
MIMO Support	2×2 MU-MIMO (Multiple-Input Multiple-Output)
Throughput (Max)	Up to 867 Mbps (on 5 GHz 802.11ac)
Bluetooth Version	Bluetooth 5.0 / 5.1 (depending on firmware/kernel support)
Bluetooth Features	Bluetooth Low Energy (BLE), aptX Audio, Bluetooth 5.0 High Speed
Advanced Wi-Fi Features	DFS (Dynamic Frequency Selection), 256-QAM, 80 MHz Bandwidth
Interface	SLIMbus (for Audio), Analog IQ, UART, PCM, and PCIe/SDIO
Package Type	WLPSP (Wafer Level Chip Scale Package)
Typical Pin Count	116-pin WLPSP
Coexistence	Integrated LTE/Wi-Fi/Bluetooth coexistence management

Key Features & Capabilities

1. 2×2 MIMO Technology

The standout feature of the WCN3990 is its 2×2 MIMO architecture. Unlike standard 1×1 antennas, this IC uses two antennas simultaneously to transmit and receive data. This results in:

Double the Throughput: Reaching speeds up to 867 Mbps.
Better Coverage: Improved signal penetration through thick walls and reduced “dead zones” in indoor environments. WCN 3990 Mobile Phone IC

2. Advanced Bluetooth 5.0

The integration of Bluetooth 5.0 provides four times the range and twice the speed of previous generations. It also supports Bluetooth Low Energy (BLE), making it highly efficient for connecting to wearables, smartwatches, and medical sensors without draining the smartphone battery.

3. Dynamic Frequency Selection (DFS)

The IC is capable of scanning and utilizing restricted 5 GHz channels (DFS channels) that are typically reserved for radar. By automatically switching channels when radar is detected, the WCN3990 ensures a stable connection in congested urban environments where standard Wi-Fi channels are overcrowded.

4. Integrated Coexistence

Because Wi-Fi, Bluetooth, and LTE often share similar frequency ranges, interference can lead to dropped calls or slow data. The WCN3990 features a sophisticated coexistence manager that prioritizes traffic and alternates transmissions to ensure that Bluetooth audio (like wireless earbuds) remains stutter-free even during heavy Wi-Fi downloads.

Common Use Cases

The WCN3990 is widely found in flagship and “premium mid-range” devices from the late 2010s. Common models include:

Xiaomi: Mi 6, Mi Note 3, Mi Max 3.
Google: Pixel 2 and Pixel 2 XL.
Samsung: Certain regional variants of the Galaxy S8/S9 (Snapdragon versions).

Maintenance Note

As a BGA/WLPSP chip, the WCN3990 is soldered directly to the motherboard. If a phone loses both Wi-Fi and Bluetooth functionality simultaneously, this IC is often the primary suspect for repair technicians, requiring professional micro-soldering for replacement.

WCN 3990 Mobile Phone IC