Magnetic Back Screen Wireless Screen Mirroring for Phones: A Hot Solution for Mobile Device Expansion

As a popular mobile device expansion solution, magnetic back screen wireless screen mirroring utilizes a dual technology approach of “magnetic fixation + wireless screen transmission” to achieve real-time synchronization of phone screens to secondary screens (portable displays, rear-facing selfie screens, etc.). It primarily meets users’ demands for “wireless connectivity, stable fixation, and high-definition synchronization,” and is widely applicable in scenarios such as live streaming, photography, office work, and gaming. Compatible with 99% of mainstream Android and iOS devices, it has become a core track for third-party accessory manufacturers.

BiJie Interconnection, a leader in multimedia collaboration systems, has launched a low-power Linux/RTOS ARM architecture wireless screen mirroring SDK for portable devices such as phone back screens and selfie assistants, helping enterprises quickly launch highly competitive products.

I. Magnetic Back Screen Wireless Screen Mirroring for Phones: Principles and Core Products

1. Technical Principle: Magnetic Fixation + Wireless Screen Transmission, Achieving “Separated Interaction”

The core of magnetic back screen wireless screen mirroring for phones is the synergy between the magnetic structure and the wireless screen mirroring module:

• Hardware Composition: The secondary screen integrates magnetic sheets (or magnetic rings), a control board, a WiFi module (some support millimeter wave), and a built-in battery (or supports phone power supply). It can be quickly attached to the back of the phone via magnetic attraction.

• Transmission Logic: The phone wirelessly transmits the screen content to the secondary screen via AirPlay (iOS), Miracast (Android), or private protocols. The secondary screen decodes and displays it in real-time.

• Advanced Features: High-end secondary screens support reverse touch control (requires a touchscreen), enabling “phone operation + secondary screen display” separation, meeting the demands for remote control and precise operation.

2. Typical Product: Magnetic Wireless Selfie Display Screen, Solving Photography Pain Points

Current mainstream products are magnetic wireless selfie display screens, primarily targeting rear-facing camera shooting scenarios:

• Core Advantage: Supports 1080P high-definition screen mirroring, solving the problem of inability to preview in real-time with the phone’s rear camera.

• Applicable Scenarios: Single-person selfies, group photos, product photography, etc. Touch control on the secondary screen allows adjustment of zoom and composition, improving shooting efficiency and final image quality.

II. Magnetic Back Screen Wireless Screen Mirroring for Phones: 4 Core Application Scenarios, Covering Diverse Needs

Phone secondary screens like magnetic back screens and selfie assistants primarily revolve around “shooting assistance” to expand into diverse usage scenarios. They not only solve the perspective and operation pain points of native phone photography but also adapt to professional needs like content creation and live streaming, making them practical accessories to enhance the phone photography experience. Specific usage scenarios are mainly divided into the following categories:

1. Daily Photography Scenarios: Say Goodbye to “Blind Shooting,” Improve Success Rate

• Single-person Selfies / Portrait Photography: Take selfies with the high-definition rear main camera, preview expressions and angles in real-time on the secondary screen, and touch to adjust parameters, getting rid of the poor image quality of the front camera.

• Multi-person Group Photos / Group Shots: During gatherings, graduation photos, and family portraits, the photographer can view all members in the frame in real-time via the secondary screen, eliminating the need for repeated checks on the phone’s main screen and external assistance.

2. Content Creation Scenarios: Empower Professional Creation, Lower Operation Threshold

• Vlog / Short Video Shooting: Fix the phone on a tripod, remotely monitor the screen and control recording start/stop via the secondary screen, and use a teleprompter function to avoid forgetting lines, improving creation efficiency.

• Product / Unboxing Photography: The secondary screen acts as a low-angle / high-angle monitoring screen, clearly showing still life details, avoiding out-of-focus shots and improper angles, ensuring material quality.

3. Live Streaming Scenarios: Enhance Professionalism, Simplify Operation Flow

• Outdoor / Mobile Live Streaming: The streamer fixes the phone on a stand, remotely adjusts shooting parameters and switches lenses via the secondary screen, and uses a teleprompter function to ensure smooth dialogue, eliminating the need to frequently look down at the main screen.

• Multi-camera Live Streaming Assistance: The secondary screen acts as a second monitoring screen, providing real-time feedback on the live broadcast, facilitating timely adjustment of lighting and angles, and optimizing the live presentation effect.

4. Special Photography Scenarios: Unlock Creative Perspectives, Ensure Safety

• Travel / Landscape Photography: The phone can be placed in high, narrow, or other dangerous/hard-to-reach positions, allowing remote framing and shooting control via the secondary screen, balancing safety and unique perspectives.

• Low-angle / Creative Photography: When shooting pets or ground-level views, there’s no need to bend down or move the phone. Preview and control via the secondary screen to easily achieve creative compositions.

III. BiJie Low-Power ARM Architecture Screen Mirroring SDK: Leading Technology, Empowering Product Upgrades

As a mature industry solution, BiJie Screen Mirroring SDK provides “full protocol adaptation + low-power optimization + high compatibility” services for portable devices such as phone back screens and selfie assistants, helping clients quickly launch products.

1. Core Technical Capabilities: Full Scenario Coverage, Balancing Experience and Efficiency

(1) Deep Adaptation of Mainstream Screen Mirroring Protocols, Compatible with All Devices

(2) Dual Reverse Control Solutions, Enhancing Interactive Experience

• Bluetooth HID Reverse Control: Supports basic operations like clicking, swiping, zooming, adapting to scenarios like meetings and teaching, with fast response and compatibility with mainstream iOS/Android devices.

• Miracast UIBC Reverse Control: High-precision reverse control, supports complex operation commands, adapting to high-frequency interactive needs like game control and professional office work.

(3) Low-Power Architecture Optimization, Adapting to Portable Devices

For Linux/RTOS ARM architecture Soc solutions, BiJie SDK performs specialized optimization:

• Lightweight: Core module memory footprint ≤ 5MB, not affecting existing device functions.

• Low Power Consumption: Power consumption reduced by 30%+ in screen mirroring state, extending portable device battery life.

• Fast Startup: Connection response time ≤ 3 seconds, achieving “instant start, instant mirror.”

2. Industry Adaptation Experience: 10 Years of Expertise, Ensuring Implementation Effectiveness

BiJie Interconnection has been deeply involved in the wireless screen mirroring field for over 10 years, serving 2000+ enterprise clients with mature adaptation capabilities:

• Hardware Compatibility: Supports mainstream ARM chips like Allwinner, Rockchip, MediaTek, providing standardized interfaces.

• System Coverage: Adapts to multiple systems including Android, Linux, RTOS, Windows, supporting customized development.

• Scenario Implementation: Has helped clients achieve mass production of products like phone back screens, smart projectors, and portable screen mirroring devices, with a screen mirroring success rate ≥ 99.5%.

3. Core Advantages: Dual Guarantee of Technology + Service, Lowering Cooperation Threshold

(1) Technical Barriers: Independent R&D, Stable and Reliable

• All Protocols Independently Developed: AirPlay, Miracast core code is self-developed, no copyright risk, fast iteration speed.

• Strong Anti-Interference Capability: Supports 4G/5G dual-band, automatic frequency hopping + signal enhancement, stability increased by 40% in complex environments.

• High Scalability: Can be upgraded to add protocols like Chromecast, DLNA, etc., to meet multi-scenario expansion.

(2) Service Guarantee: Efficient Response, Customized Support

• Fast Integration: Provides development documentation, Demo projects, with an average integration cycle ≤ 7 days.

• Customized Development: Supports protocol trimming, feature customization, UI adaptation, matching client product positioning.

• Lifetime Maintenance: Free version upgrades, 7×24 hours technical response, ensuring long-term stable operation of products.

4. Cooperation Value: Low Cost, High Efficiency, Accelerated Product Launch

By choosing BiJie SDK, clients can gain three core values:

• Cost Reduction: No need for self-developed protocols, saving 6-12 months of R&D cycle and costs.

• Quality Improvement: Quickly gain industry-leading screen mirroring functions, increasing product premium space by 20%+.

• Focus on Core: Clients can focus on product design and market promotion, with BiJie providing full-process technical support.

IV. Summary: Magnetic Back Screen Wireless Screen Mirroring for Phones, Opening a New Ecosystem for Mobile Device Expansion

Magnetic back screen wireless screen mirroring for phones, with its advantages of “wireless connectivity, magnetic fixation, and full-scenario adaptation,” is becoming a rigid demand solution in fields such as photography, live streaming, and content creation. BiJie Interconnection’s low-power ARM architecture screen mirroring SDK, with its full protocol adaptation, low-power optimization, and mature service system, provides an efficient implementation path for accessory manufacturers, helping the industry create more highly competitive products and continuously upgrade the mobile device expansion ecosystem.