Android Auto Wireless Adapter for Android Phone - Fast 5.8GHz

In this review the B4 Pro adapter is evaluated as a practical upgrade for drivers who already have factory wired Android Auto and want a clean, cable-free experience. The biggest reason to buy is its dual-core 5G chip and 5.8GHz WiFi transmission, which together deliver a noticeably faster, more stable auto-connection than older single-core dongles. The unit preserves touchscreen, voice and steering-wheel control integration while eliminating the daily plug-in routine for navigation, calls and music.

Key Features

• Wireless conversion: Converts a car's factory wired Android Auto to wireless so the phone can connect automatically without a cable.
• Dual-core 5G chip: Uses a dual-core 5G processor for faster handshake and more stable connections, reducing lag during navigation and media playback.
• 5.8GHz WiFi: High-speed 5.8GHz signal transmission minimizes freezing and interference for smoother audio and map updates.
• Thermal vent design: Built-in vents help dissipate heat during long drives so the adapter maintains performance without throttling.
• Compact USB design: Small USB form factor preserves the car's factory look and requires minimal dashboard space.
• Hi-Fi audio support: WiFi 5 technology restores high-quality audio streaming for clearer music and call sound.

Who It's For

This adapter is aimed at drivers with cars from 2017 onward that have factory-installed wired Android Auto and who want to eliminate the cable without changing their head unit. It is a good fit for users who rely on navigation, voice commands and in-car music and want faster automatic connections and fewer interruptions.

Those who should look elsewhere include owners of BMW, Tesla or aftermarket stereos, plus specific incompatible models listed by the manufacturer. Also check that your phone runs Android OS 11 or later before purchasing.

Pros & Cons

Pros

• Fast, reliable wireless connection thanks to the dual-core 5G chip and 5.8GHz WiFi.
• Maintains full car controls including touchscreen, buttons and voice functions.
• Thermal venting and compact USB styling keep the unit cool and unobtrusive.

Cons

• Not compatible with several makes and models and excluded brands like BMW and Tesla, so buyers must verify fitment.
• Requires an Android phone running OS 11 or later, which limits older device use.

Specifications

Our Verdict

The B4 Pro is a sensible, cost-effective choice for drivers who want to convert a wired Android Auto connection to wireless without altering the car stereo. Its dual-core 5G chip and 5.8GHz WiFi reduce lag and improve connection stability, and the thermal design keeps performance steady on long trips. Confirm compatibility with your car model and Android 11+ phone, and the adapter delivers strong value by eliminating daily cables and preserving full factory controls.

Frequently Asked Questions

Will this work with my car?
It works with most factory wired Android Auto systems from 2017 onward but excludes BMW, Tesla and a list of specific models; verify compatibility before buying.

What phones are supported?
Your Android phone must run Android OS 11 or later for the adapter to function properly.

Does it affect audio quality?
No; WiFi 5 support is designed to restore high-quality digital audio with minimal interruptions when connected.