Dudu7 wifi Bluetooth usb ADB fonctions.

Juluan

Hi everyone,

I’m considering buying the DUDUAUTO DUDU7, but before I make the switch I need some precise technical confirmations, especially regarding Bluetooth, Wi-Fi and USB/ADB, because my setup relies heavily on connectivity.

✅ Current situation

I currently have an Android head unit based on the UIS8581 platform.
It works, but it is heavily restricted on Bluetooth/BLE and USB OTG (no ADB, no SPP, etc).

Because of these limitations:

BLE OBD2 adapters will not connect

Simple Chinese LED Bluetooth controllers are not detected

No ADB → no proper tactile mirroring

Some 12V Wi-Fi dashcams refuse connection (but USB-powered “smartphone type” dashcams work fine)

Before I invest in the DUDU7, I need to know if these restrictions are not present on this model.

❓ Technical questions (real-world compatibility)

1️⃣ Bluetooth

Does the DUDU7 fully support SPP (Classic Bluetooth) in addition to BLE?

Are BT 2.1 / BT 3.0 SPP-only OBD2 adapters working without issues?

Are BLE-only LED controllers (e.g. cheap chinese RGB controllers) detected and usable?

Can multiple BT devices be paired at the same time? (phone + OBD2 etc.)

2️⃣ Wi-Fi

Can the Wi-Fi operate in AP + STA mode simultaneously (hotspot + client)?

Are there Wi-Fi drops when using Wireless Android Auto?

Is it possible to connect a Wi-Fi dashcam while still using 4G for internet?

3️⃣ USB / OTG / ADB

Does the DUDU7 support full USB OTG (device mode)?

Is ADB over USB or Wi-Fi actually working, or is it blocked by firmware?

Is tactile mirroring via scrcpy/ADB possible?

Can a powered USB hub be used without issues?

📌 Feedback from users

For those who already own a DUDU7:

Have you successfully connected a Classic BT SPP OBD2 adapter?

Have you tested BLE LED controllers?

Does ADB/mirroring really work?

Any recommended firmware version?

🎯 Goal

If the DUDU7 has fully open BT + Wi-Fi + USB/ADB,
then it would replace my UIS8581 without needing extra workarounds.

But if Bluetooth is still locked down like most Chinese head units, then it would not be worth upgrading.

Thanks in advance for your technical feedback 👍

Mikescotland

Juluan I try to answer some of these. Haven't used adb yet on mine:

Bluetooth. Yes and no. For duduOS obd data used in triggers and widgets, only BLE. For 3rd party apps like torque, any adaptor, doesn't need to be BLE. So in reality, if you don't want to unpair /pair between two BT subsystems, you need two adaptors.
Multiple devices can be paired. However, phones - only one can be used at a given time. You'd need to tap in options to switch to another one. No problem with mixed devices like obd, phone, etc. Note - it's a BT audio sink device, you won't be able to transmit audio from Dudu to another sink.
WIFI. AP and WiFi. As far as I know no, because (going to the 2nd question), when Android auto wireless connects, WiFi turns off as AP mode is on. But this is standard as far as I know with wireless android auto.
WiFi camera - they create AP and Dudu would switch to camera AP, of course and 4G provides Internet with no problem. Well, there is problem. It's a gamble. Users report with max 4G coverage downloads of 1Mbps while their phone has 50Mbps in the same location. The issue hasn't been yet repaired (upload is not affected). If you're from the US, situation is worse as majority of 4G bands in the US isn't supported by Dudu. You might search for this problem on the forum.
USB. as far as I tested yes, full OTG. Accepts whatever I connect including 5G USB modem.
Powered hubs accepted, same as without power. Using unpowered passive hub with 2 sticks and TPMS woth no problem.

Firmware 3.6E is the current one. Has pretty much fine amount of bugs which allegedly would be resolved in 3.7. No eta though as of today.
Firmware 3.5 was OK, better backlight driver but worse audio and lack of some features.

Juluan

Mikescotland Thank you for these details.