[Drdriver]

Hey fellow Bhpians.
I have recently gotten an android headunit installed in my car which is running android auto via headunit reloaded app.
It connects fine both ways, wirelessly and wired. But I’ve seen that when my phone is using AA wirelessly, all connections (wifi, bluetooth, location and data) are switched on and that starts draining my battery. I plug it in the 12v socket and soon it gets so hot that i can literally make an omelette over it.
If i go the wired way, the HU doesn’t put out enough current to charge the phone and it shows 7h+ charging time on 35%. Plus, it doesn’t even charge and rather the battery drains here too. It still gets warm, but not so much. I’ve been using an AC vent mobile holder to keep my phone cool but it means that I have to consistently blast my AC on road trips even when the weather is good outside and it just ruins my mileage. Has anyone experienced the same? And are there any solutions to this issue?

[Mr.Boss]

2 key information missing - Which HU, which Phone?

Try with a different phone and observe the same for easy conclusion.

My observations so far with Pioneer 5290 & JVC 740 models (both with wired AA & ACP)

No heating issues in below models
- Moto One fusion plus
- iPhone SE2020

Moderate heat (a little above warm)
- Vivo T2
- Honor (forgot the model)

Fry pan
- Samsung M13

[shancz]

While your phone is unknown, Exynos chipsets are notorious for heating especially on mobile data. Do check and confirm. Charging a heating phone will make matters worse.

Is your phone set to 5G by default? I have noticed high battery drain and heating when on 5G network and data. That device was the Moto Edge 20 Fusion running Dimensity 800U.

Assuming that your battery backup is okay otherwise, check if your phone is overheating under normal map navigation on mobile data which could indicate an issue with the SoC.

[Drdriver]

Originally Posted by shancz

While your phone is unknown, Exynos chipsets are notorious for heating especially on mobile data. Do check and confirm. Charging a heating phone will make matters worse.

Is your phone set to 5G by default? I have noticed high battery drain and heating when on 5G network and data. That device was the Moto Edge 20 Fusion running Dimensity 800U.

Assuming that your battery backup is okay otherwise, check if your phone is overheating under normal map navigation on mobile data which could indicate an issue with the SoC.

My phone is a samsung galaxy m14 5G. Bought it 2 days ago. But I was facing the same issue on my Galaxy A12. Could be the exynos chipset issue you mention.

Originally Posted by Mr.Boss

2 key information missing - Which HU, which Phone?

Try with a different phone and observe the same for easy conclusion.

My observations so far with Pioneer 5290 & JVC 740 models (both with wired AA & ACP)

No heating issues in below models
- Moto One fusion plus
- iPhone SE2020

Moderate heat (a little above warm)
- Vivo T2
- Honor (forgot the model)

Fry pan
- Samsung M13

Samsung M14 5G paired with an aftermarket android HU. Probably a chinese maxxlink one.


Could a product like this help? I have ordered it. Will test it and update here

https://www.flipkart.com/kipzo-usb-t...2NV7CHBPDKZX5I

[shancz]

Originally Posted by Drdriver

samsung galaxy m14 5G. Bought it 2 days ago. But I was facing the same issue on my Galaxy A12. Could be the exynos chipset issue you mention.

So both using Exynos and the M14 would be on 5g networks I guess. Either of those causes can cause the issue.

I have no experience with HU so cannot comment on it but since its a common factor between the 2 phones apart from Exynos SoC, it is also worth exploring.
I guess easier will be to try another phone unless you have access to another HU.

Keep us posted.

[dass]

Same issue experienced with One + Nord CE 2. It heats up like crazy when connected wireless. The other phone I have is a realme 5 pro and while this has AA, it does not connect wirelessly and needs a wire to connect and this heats up as well. This is with a new Harrier.

[Drdriver]

Originally Posted by shancz

So both using Exynos and the M14 would be on 5g networks I guess. Either of those causes can cause the issue.

I have no experience with HU so cannot comment on it but since its a common factor between the 2 phones apart from Exynos SoC, it is also worth exploring.
I guess easier will be to try another phone unless you have access to another HU.

I’ll keep updating as I go. Went for a 20km drive today. Connected AA wirelessly and charging on 12v. Placed it on a vent holder.
The phone does heat a little bit but remains cool on turning on AC. The major factor I experienced is that if the phone screen is turned on, and some apps are running, then it will just be so hot. But if it is just running android auto and screen is off, then things are okay even with AC off. I also experienced camera lag when I got out to click a couple of pictures. So I definitely think its the Exynos processor issue. My phone is still using 4G networks. Not yet transitioned to 5G.

Waiting for the data/PD splitter to arrive and will test that if it works.

Originally Posted by dass

Same issue experienced with One + Nord CE 2. It heats up like crazy when connected wireless. The other phone I have is a realme 5 pro and while this has AA, it does not connect wirelessly and needs a wire to connect and this heats up as well. This is with a new Harrier.

The stock headunit with the Harrier?

[dass]

Originally Posted by Drdriver

The stock headunit with the Harrier?

Yes, the stock unit in the 2023 model.

[Kosfactor]

When a phone is playing music and navigating at the same time, its not a problem however when the battery is a bit low and the fast charging is trying to quickly top up the battery, this can be a problem, especially if it has wireless fast charging, the inefficient nature of wireless charging combined with fast charging releases quite a bit of heat as it is, there is no place for all that heat to go.

Some things you can experiment with.

1. connect to a non-fast charging port.
2. charge the phone completely before entering the vehicle.
3. keep only the music and navigation on in the phone apps.
4. remove the phone cover when using wireless fast charging.

To put this in perspective -

A super cheap Vivo something phone happily runs Android Auto, it does not have a very fast charging speed or wireless charging at all.

[Drdriver]

Originally Posted by dass

Yes, the stock unit in the 2023 model.

I hate Tata for their QC in their cars. The cars are great, but what's the point of spending more for features which are not going to work properly in the first place?

[Shreyans_Jain]

Originally Posted by Drdriver

I hate Tata for their QC in their cars. The cars are great, but what's the point of spending more for features which are not going to work properly in the first place?

This isn’t a Tata issue; this is a phone issue and a basic thermodynamics issue. The specific chipset is prone to overheating, especially when multiple things are used simultaneously, and fast charging generates a lot of heat. Net net, the phone will get hot.

The OP’s phone is new. I have this same issue in my ageing iPhone XR. Wired CarPlay with navigation running, summer heat and especially on a battery charge under 20%, the phone heats up so much that charging stops. Sometimes, it shuts down altogether. My solution is to set it up and then put the phone into the cooled glovebox. That keeps it working and charges well too.

[navin]

Originally Posted by Drdriver

I hate Tata for their QC in their cars

I don't own a Tata. I might never buy a Tata. But I know several satisfied Nexon and Tigor owners. The first time I drove the Nexon, I was pleasantly surprised.

As Shreyans said above, it might be a phone issue.

[Game_of_Roads]

I have a Slavia 8 inch Infotainment system + wireless AA using Motorola MA-1 adapter. I have the OnePlus 11 (Snapdragon 8 Gen2) and the phone gets warm with wireless AA + navigation running + music playing + Charging with a 30Watt charger, but didn't get HOT toasty.

As others have been saying I believe it comes down to the phone's performance + heat management capacity.

OP11 with SD8Gen2 which is specifically optimised for efficiency and heat management seems to fare well in this regard. Exynos and definitely SD8Gen1 which was notorious for heating and battery drain issues when pushed hard probably will end with a toasty phone with Wireless AA + charging.

[abhisekbit]

I managed to test a host of phones with Wireless Android Auto and Android based Chinese Headunits.
And the observation is practically the same. Use it for long drives and the phone is practically unusable. Battery gets depleted very fast and phone heats up like hell.
So mostly I use a secondary phone for wireless android auto connected to power will the primary phone is used for other stuffs.
The primary phone is connected to the headunit only via Bluetooth so as to receive calls outside of Android Auto.

[Drdriver]

Originally Posted by Shreyans_Jain

This isn’t a Tata issue; this is a phone issue and a basic thermodynamics issue. The specific chipset is prone to overheating, especially when multiple things are used simultaneously, and fast charging generates a lot of heat. Net net, the phone will get hot.

The OP’s phone is new. I have this same issue in my ageing iPhone XR. Wired CarPlay with navigation running, summer heat and especially on a battery charge under 20%, the phone heats up so much that charging stops. Sometimes, it shuts down altogether. My solution is to set it up and then put the phone into the cooled glovebox. That keeps it working and charges well too.

I was talking about the thing where one phone connects wirelessly but the other has to connect wired. My HU is aftermarket, and I agree, it seems more of a phone processor issue. Still waiting on the usb-c splitter to test it out and update.