Advice for dedicated AA phone

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WieselDroid

Member
Dec 23, 2012
10
3
Hi there,

since I don't want to root my main phone (don't want to hassle around with some apps that try to block on rooted phones, and also don't want to enable that stupid google voice assistant to use google maps and so on) I want to buy a phone just for Android Auto. This phone will be rooted and stay in the car all time, it could also get a custom ROM. Since I don't have any experience with AA mirror yet and also not that much experience with rooting, it would be great if you have some suggestions what I could get for this use case.

From what I found here so far, the requirements seem to be:
- easy to root
- possible to install custom roms
- will have the display turned on (for AA mirror) for several hours whenever traveling a longer distance
-- maybe heat could be an issue?
- should not have the cheapest battery since it will be charged for long times when traveling as well as not charged at all for several days
-- unfortunately, there doesn't seem to be smartphones anymore that can be used with batteries pulled out
-- is there anything to be considered because of the always-usb-connected use case
- preferably a cheap model from a premium manufacturer

Any suggestion for my decicion or experience with a dedicated phone would be helpful.
 
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cboghiu

Member
May 6, 2018
24
0
can you please hep me with the raspberry pi to make aa diplay for my skoda bolero mib 2.0 android auto?
 

lastinfantry

New member
Jan 17, 2019
2
0
Every phone should work.
It's only important that you use an app like Automate to put the phone into airplane mode whenever the cable is disconnected (=car head unit shut off). This requires root.
I personally use an old Galaxy S4 with ridicously bad battery health and it stays on for around 2 days without driving. It charges while you're driving, of course.
No issues with heat. I keep it in the burning hot glovebox.
 
D

Deleted member 1198227

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I am doing this for a year now. I use an old nexus 5x.
Until now i had a original based custom rom, but just ysterday i wanted to refresh some things so i installed slim rom. (It is very light and dont have play services. I then installed pico gapps. It is the lighter you can flash so that android auto to work).
I use 7.1.2 custom rom because i think is better for android auto.

Anyway what i have:
-I used a switch (on/of), soldered in a cable so tha start / stop android auto just by turning on/off the switch.

- I disabled completely lockscreen. Set brightness to min and disable auto brightness.

- Use titanium to freeze whatever i don't need. Many things including phone app, etc)

- I used tasker. 2 conditions:
When phone doesn't charge set battery save mode.
When car mode is enabled (which means android auto is running) enable wifi on, location on etc. When car mode of disable all, also kill 20 apps (so that no app stay in background so no battery consumption when android auto goes off).
(some use only charging condition but my setup is more complicated so this works fantastic.)

With this, i practically can use android auto without ever battery discharge. When phone doesn't change and android auto doesn't run, battery consumption is very very low. It can Last more than 20 days and battery is very old.

I actually have some more complicated setup. When switch is off i change from another usb of the car (not the one i use for android auto). I have in this usb a changer with more amper to charge faster when i don't use android auto..
I don't propose it as this is much difficult for the average person. Just write it as an idea if car doesn't change fast (this happens in my car).

I posted my use / ideas. Some may be useful to some, some other not.

I may post a video here displaying it some time when i found time and tasker setup if anyone need it as many wants this. I have read alot to do this in varius sites.
 
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D

Deleted member 1198227

Guest
I'll post it here also:
I made a 4 minutes video displaying android auto mirroring in my car, with some apps and a dedicated phone with a switch for this. It may give some ideas:
 
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Deleted member 1198227

Guest
Hi .
What rom do you recommend for S5?
You mean galaxy s5?, I don't have s5. I had it in past. I would install something similar to the rom i installed to nexus 5x i have.
The lighter nougat rom with pico gapps.
If it goes ok with battery consumpsion an especially standby time you keep it. If not try another one.
 
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ahhl

Senior Member
Jul 23, 2007
1,073
114
i did it using mi 6a. it auto boot and auto off upon detection upon power on

search on xda on how to auto power on device. many device can do this
Sent from my vivo 1723 using Tapatalk
 

WieselDroid

Member
Dec 23, 2012
10
3
Thank you for all the suggestions so far. :)

I am doing this for a year now. I use an old nexus 5x.
I actually have some more complicated setup. When switch is off i change from another usb of the car (not the one i use for android auto). I have in this usb a changer with more amper to charge faster when i don't use android auto..
I don't propose it as this is much difficult for the average person. Just write it as an idea if car doesn't change fast (this happens in my car).

I remember that I read somewhere that Android Auto only needs the data wires from the USB cable so it would be possible to connect only the two data wires to the cars USB port and the other two wires to a fast charger, I think there even are prebuild Y-like cables that do exactly this.

But I'm not sure if this still works as expected since nowadays we have USB-C connectors and a lot of different fast charging standards. Some require the data cables to be short cutted (so you cannot use data at the same time) while others send different voltage impulses as handshakes to determine the charger type.

But maybe it is worth looking into this topic for you (and maybe for me aswell if I will encounter the same issue).


Doesn't look like this would be working, found a thread here about it: https://forum.xda-developers.com/an.../usb-y-cable-to-quick-charge-android-t3448805
 
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Deleted member 1198227

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Thank you for all the suggestions so far. :)



I remember that I read somewhere that Android Auto only needs the data wires from the USB cable so it would be possible to connect only the two data wires to the cars USB port and the other two wires to a fast charger, I think there even are prebuild Y-like cables that do exactly this.

But I'm not sure if this still works as expected since nowadays we have USB-C connectors and a lot of different fast charging standards. Some require the data cables to be short cutted (so you cannot use data at the same time) while others send different voltage impulses as handshakes to determine the charger type.

But maybe it is worth looking into this topic for you (and maybe for me aswell if I will encounter the same issue).


Doesn't look like this would be working, found a thread here about it: https://forum.xda-developers.com/an.../usb-y-cable-to-quick-charge-android-t3448805
You read my mind.. :)
That i was thinking to do in future. I just dont change anything yet as everything working perfect.
But i think more would become simplier if i connect only the 2 data cables in car usb of android auto (or the 3rd cable , earth, also), and charging from the other usb with the fast charger.
As i remember it was working when i experimended.
 

cboghiu

Member
May 6, 2018
24
0
Hello. I have a problem. I have an S7, Oneplus 3t with carteam enabled (the car is skoda Octavia 3 with bolero mib 2). The problem is that the image on youtube is lagging and on storage all that are over 360p are lagging. What I am doing wrong? Please help me
 

pajarito3003

New member
Jul 15, 2008
1
0
Hi guys, Is possible connect 2 phones to car?

I explain my case, I have a Sync3 (Ford), with 2 USB, my plan is use an old Xperia ARC to install AA mirror, and use my first phone for use with android auto..

Is possible this?

Xperia is easy rooteable, my first phone is a Huawei P20 Pro without root.

Thanks in advance!!!!
 

WieselDroid

Member
Dec 23, 2012
10
3
Hi guys, Is possible connect 2 phones to car?

I explain my case, I have a Sync3 (Ford), with 2 USB, my plan is use an old Xperia ARC to install AA mirror, and use my first phone for use with android auto..

Is possible this?

Xperia is easy rooteable, my first phone is a Huawei P20 Pro without root.

Thanks in advance!!!!

Sorry, haven't seen this post. I think it is not possible with both USBs but you can put one phone to the usb and use it as a forwarder for the other phone.

https://www.xda-developers.com/wireless-android-auto-head-unit-hack/
 

lew26

Senior Member
Nov 1, 2019
133
20
Hi there,

since I don't want to root my main phone (don't want to hassle around with some apps that try to block on rooted phones, and also don't want to enable that stupid google voice assistant to use google maps and so on) I want to buy a phone just for Android Auto. This phone will be rooted and stay in the car all time, it could also get a custom ROM. Since I don't have any experience with AA mirror yet and also not that much experience with rooting, it would be great if you have some suggestions what I could get for this use case.

From what I found here so far, the requirements seem to be:
- easy to root
- possible to install custom roms
- will have the display turned on (for AA mirror) for several hours whenever traveling a longer distance
-- maybe heat could be an issue?
- should not have the cheapest battery since it will be charged for long times when traveling as well as not charged at all for several days
-- unfortunately, there doesn't seem to be smartphones anymore that can be used with batteries pulled out
-- is there anything to be considered because of the always-usb-connected use case
- preferably a cheap model from a premium manufacturer

Any suggestion for my decicion or experience with a dedicated phone would be helpful.

I'm confused. Why does a phone using android auto have to be rooted?
 

ahhl

Senior Member
Jul 23, 2007
1,073
114
well,
i been doing for the past 4 years already. you can use non root device but you miss out on video play on the car screen.

i am using redmi 4x and redmi 3, both because the availability of custom rom. but i didn use custom rom because it seems the custom roam break data and sms.

not all old phone can be use because on certain devices, android auto takes ages to connect to satellite. for example i hav tried S4, huawei mate 7, Vivo V9, all these device have problem with gps connection, sometimes didn't connect to satellite at all. it seems the low end android device release before 2016 have this issues. i think it also because of my geographic location whic require a-gps, glonass and bds, the only it work.

heating issues, yes, it exist but i use kernal app to limit the max core speed. that it works.

the other reason i chose redmi because the ability to modify the init.rc file to make the device to auto boot when i start the car.

and to turn off the device automatically when you exit the car, i use microdroid and power unplug. apk, which only available on aptoid.

i also create a macro, to send my car location to me incase of theft.[emoji1696]

Sent from my Redmi Note 7 using Tapatalk
 
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I'm looking into doing this. I have an old Sony Z5 Compact but if I recall, it was too slow for AA. Therefore, I'd appreciate any recommendations for a cheap used phone I could buy.

I'm thinking it has to have:
1. Good GPS
2. Ability to Charge faster than it can drain
3. nanoSIM
4. Ability to root for things like init.rc for autoboot.
5. Fast boot time would be nice but perhaps I can use tasker/automate to have it goto deep sleep when its not charging

Ideally, a cheap used unlocked phone I can buy on ebay. Just searching specs, I'm thinking perhaps a Moto G Stylus, Xiomi Poco M3. I also have an old Pixel XL but I'm saving that for unlimited google photos

Before my car had android auto, I used an old tablet. It worked OK but the biggest issue was that it could not charge faster than it would drain. The battery would eventually wear down. Also, after a while, AA would just crash. Ofcourse, here, I'm just mirroring so it is a little different.
 

sosimple

Senior Member
Aug 20, 2017
2,245
44
48
Greece
www.youtube.com
I'm looking into doing this. I have an old Sony Z5 Compact but if I recall, it was too slow for AA. Therefore, I'd appreciate any recommendations for a cheap used phone I could buy.

I'm thinking it has to have:
1. Good GPS
2. Ability to Charge faster than it can drain
3. nanoSIM
4. Ability to root for things like init.rc for autoboot.
5. Fast boot time would be nice but perhaps I can use tasker/automate to have it goto deep sleep when its not charging

Ideally, a cheap used unlocked phone I can buy on ebay. Just searching specs, I'm thinking perhaps a Moto G Stylus, Xiomi Poco M3. I also have an old Pixel XL but I'm saving that for unlimited google photos

Before my car had android auto, I used an old tablet. It worked OK but the biggest issue was that it could not charge faster than it would drain. The battery would eventually wear down. Also, after a while, AA would just crash. Ofcourse, here, I'm just mirroring so it is a little different.
I wrote above as "sosimple" but it now shows me "deleted member" due to a problem in xda forum through its moving period, that accidentally deleted my account.
Anyways, as i wrote i have an old nexus 5x. Its not the best for the work, but it does it.
If i was going to get one phone for this now, i would search something better. Probably is a good solution to buy a used phone with broken (but working) screen to get it very cheap.

4-5. I think is difficult to find one who does this. I couldn't do it in Nexus 5x (although i read it can be done) so i used a different approach :
2 Tasker scripts to watch if car mode is enabled or not.
-When android auto running, car mode is enabled automatically, tasker script1 run so do what you need then eg turn on Bluetooth, gps, normal battery mode etc..
-When android auto is off, car mode disabled automatically tasker script2 run so disable Bluetooth, GPS, enable battery light consumption mode, flight mode, etc.
This way nexus 5x (and probably most phones) loose 1-2% battery in standby mode per day, so you don't actually needs to power off phone, and it boots to android auto much faster (5 seconds in Nexus). Especially if you debloat phone. I have deleted (or freeze with titanium) most of android. Keep only what needed for android auto and mirroring to work. I did this not only for battery but also for speed.

2. As i wrote before, i have created a cable with a switch:
-when turn on switch phone connect to car usb for android auto, so android auto runs.
But i do have the problem of phone drain faster than charging. It depends of the car. If the usb for android auto charges slow, you can't do anything for this. I didn't have much problem because the battery still last for 6 hours continually.
-When turn off the switch, disconnect phone from car usb for android auto (so android auto stops in phone and in car), and connecting the phone to a 2nd usb of the car where i have a fast usb charger.
This way battery is always charged.
I use it more than 2 years this way, everything works fine.

But there is probably a better solution that i may try in future.
For understanding what i will write (i have created the cable 2 years ago so i dont remember exactly how), I'll post some info, and Google it for more:
A usb cable have 5 wires inside. 2 are for data, 2 for power +-, and 1 for grounding.
So you can create a cable which the 2 cables for +- will go to a fast usb charger. This way phone will always charge fast (faster than it drain) when car in on.
The other 2 wires and ground will go to the car usb for android auto.
You will have a Y cable with 3 usb: the 1st goes to phone, the 2nd go to the (fast) charger, the 3rd go to car usb for android auto.
I have try this and worked. You don't have to charge phone from the same usb which use android auto.
English is not my native language, i hope everyone who reads to understand what i write.
If i do this method I'll post the wiring.

This is my old video, i have change many things from then, I'll post another one some time.
 
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    Hi there,

    since I don't want to root my main phone (don't want to hassle around with some apps that try to block on rooted phones, and also don't want to enable that stupid google voice assistant to use google maps and so on) I want to buy a phone just for Android Auto. This phone will be rooted and stay in the car all time, it could also get a custom ROM. Since I don't have any experience with AA mirror yet and also not that much experience with rooting, it would be great if you have some suggestions what I could get for this use case.

    From what I found here so far, the requirements seem to be:
    - easy to root
    - possible to install custom roms
    - will have the display turned on (for AA mirror) for several hours whenever traveling a longer distance
    -- maybe heat could be an issue?
    - should not have the cheapest battery since it will be charged for long times when traveling as well as not charged at all for several days
    -- unfortunately, there doesn't seem to be smartphones anymore that can be used with batteries pulled out
    -- is there anything to be considered because of the always-usb-connected use case
    - preferably a cheap model from a premium manufacturer

    Any suggestion for my decicion or experience with a dedicated phone would be helpful.
    1
    Have you considered a raspberry pi?
    There are plug n play rom do get that up and running as a AA display

    Sent from my SM-N960F using Tapatalk
    1
    D
    Deleted member 1198227
    I'll post it here also:
    I made a 4 minutes video displaying android auto mirroring in my car, with some apps and a dedicated phone with a switch for this. It may give some ideas:
    1
    D
    Deleted member 1198227
    Hi .
    What rom do you recommend for S5?
    You mean galaxy s5?, I don't have s5. I had it in past. I would install something similar to the rom i installed to nexus 5x i have.
    The lighter nougat rom with pico gapps.
    If it goes ok with battery consumpsion an especially standby time you keep it. If not try another one.
    1
    You mean galaxy s5?, I don't have s5. I had it in past. I would install something similar to the rom i installed to nexus 5x i have.
    The lighter nougat rom with pico gapps.
    If it goes ok with battery consumpsion an especially standby time you keep it. If not try another one.
    Thanks for the advice :bueno: