Battery performance

jonsmirl

Took some notes on my battery performance.

I made it 2 days and 21 hours on a single charge
I played music over wifi for 9 hours of that (screen off during music)
I installed some apps and rebooted the phone a couple of time
it has a SIM card in it, but this not my primary phone so it did not do much on cellular.

That is a very light test, but I almost made it three days. Battery life seems reasonable to me.

Now if only we could get a fix for USB Audio so that Android Auto will work!

MarcinP

Could you please explain a bit more what exactly not working on android auto, how you connected and which vehicle you using for this.

jonsmirl

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MarcinP replied at 2018-7-25 02:32
Could you please explain a bit more what exactly not working on android auto, how you connected and  ...

Older cars use AOA mode -- Android Open Accessory 2.0 -- for audio.
https://source.android.com/devices/accessories/aoa2

List of some hardware using this mode,,,
https://www.crutchfield.com/S-MD ... ry-app-control.html

You can test this mode using Linux Deskop.  Look in this thread, I posted detailed instructions on how to reproduce the error without needing to buy a car headend unit.

http://community.umidigi.com/for ... 7283&extra=page%3D1

Also, Android docking stations also use AOA 2.0 mode when they have a speaker inside.

This bug seems to be specific to the MT6739 A1, I also have a MT6737 based Noka 1 which uses the same source code base from Mediatek and it works fine in AOA mode.

From the Google developer page...
That app I linked in the other post will send this 'SET_AUDIO_MODE' USB packet to enable audio output.

Audio support

AOAv2 includes support for audio output from an Android device to an accessory via a standard USB audio class interface capable of 2 channel, 16-bit PCM audio with a bit rate of 44100 Khz (additional audio modes may be added in the future).

To enable audio support, the accessory must send a new USB control request:

**SET_AUDIO_MODE**  requestType:    USB_DIR_OUT | USB_TYPE_VENDOR
request:        58
value:           0 for no audio (default),
                     1 for 2 channel, 16-bit PCM at 44100 KHz
index:           0
data              none

This command must be sent before sending the ACCESSORY_START command for entering accessory mode.

jonsmirl

Here is an example of an Android dock that uses AOA mode.

https://en.j5create.com/collecti ... variant=12259828804

RonZ

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I bought two UMIDIGI A1 Pro smartphones.

On both of these smartphones,
Settings > Battery > "App usage since full charge"
indicates
"Battery usage data isn't available."

Why?
Is there any way to get App battery usage data, without adding or using another App?

Thanks for any feedback or suggestions.

MarcinP

RonZ replied at 2018-9-5 22:26
Edited by RonZ at 2018-9-5 22:30 \n\n
I bought two UMIDIGI A1 Pro smartphones.

Each app will show in battery usage only if battery usage will be higher than 1%, of course until list will filed up, then you will see only apps with highest battery usage.

RonZ

Can an actual owner of the UMIDIGI A1 Pro please verify whether "App battery usage data" is ever displayed. Or do you always only see the message "App battery usage data isn't available." Much thanks.

MarcinP

RonZ replied at 2018-9-9 19:27
Can an actual owner of the UMIDIGI A1 Pro please verify whether "App battery usage data" is ever dis ...

I just checked now and I was wrong, sorry for this.
Unfortunately A1 pro is not showing app or device usage in battery settings.
I will report this to system developers.
Please check for some app from play store