best HW for Osmand?

[Stehlik, Vladimir]

Hi,

I have used Osmand on Lenovo Tab2 tablet which was running quad-core chipset with 1GB RAM and low screen resolution. Now I'm using it on Vernee M5 phone which is octa-core with 4GB RAM and full HD display. Both suffer from overheating while running it. In fact both of these devices were not charging at all even if plugged into the car's socket while running Osmand, so consuming as much energy as flew in, sometimes even more :-(

Since Lenovo died, I'm now in the process of choosing a successor, hence a question towards those who know how the code works or have the experience: Is it better to look for more cores and more GHz and more RAM or shall I rather look for more powerfull chipset with less cores of more performance? Is there a sweet spot in there? Or what is the feature that changes it? Android version? Graphical chip? 

To give example two extremes of similar price:

quad core with 2GB RAM: https://navitel.ru/en/devices/navitel-t757-lte

deca core with 3GB RAM: https://www.chuwi.com/product/items/Chuwi-Hi9-Pro.html

Of course they both are running different Android as well and have different screen size and resolution. They both also support Glonass (and the chipsets are capable of Galileo as well).

I'm looking for a rather low cost (as I expect it to die again in max 2 years) 7" (preferably) or 8"max tablet with primary function as navigation in the car.

Any ideas?

V.

[Florian Lohoff]

Hi Vladimir,

On Mon, Sep 02, 2019 at 06:47:03PM +0000, Stehlik, Vladimir wrote:
> Hi,
>
> I have used Osmand on Lenovo Tab2 tablet which was running quad-core chipset
> with 1GB RAM and low screen resolution. Now I'm using it on Vernee M5 phone
> which is octa-core with 4GB RAM and full HD display. Both suffer from
> overheating while running it. In fact both of these devices were not
> charging at all even if plugged into the car's socket while running Osmand,
> so consuming as much energy as flew in, sometimes even more :-(

Whatever you do - More Hardware consumes more power. So you better
look out for something with USB-C and Quickcharge/Turbocharge
so you get more than 5W into your device (5Volt * 1Ampere).

https://en.wikipedia.org/wiki/Quick_Charge

I am using a Moto X4 (LineageOS) and i dont have any problems like this.
(Using a QuickCharge cigarette lighter adapter)

And you can do the math. Lenovo Tab 2 with a 30 Watt/hour battery is rated
for average 10 hour operation. Thats most likely a very optimistic
runtime, mostly idle, surfing the web. So in Idle
the tablet consumes at least 3 Watt - Using OSMAnd, GPS etc
will go above the 3 Watt. Without any more sophisticated
power solution than standard USB you drain the battery although
beeing connected. USB does 5 Volts at 1 Amp
with standard chargers and devices - thats 5 Watt.

Flo
--
Florian Lohoff f...@zz.de
UTF-8 Test: The 🐈 ran after a 🐁, but the 🐁 ran away

[Danny Schneider]

my personal expierence is:

OSMAND needs a good CPU and is demanding on the GPU (new mobile phones have more Power than a mature Desktop PC 10 years Ago, but get very warm if used for longer periods like navigating in a car, which is also a hot enviroment)

also Maps need a lot ROM storage.

This means a more modern CPU is better. especially modern in terms of a good manufacturing process like 10nm or lower. This produces less heat for the same computing tasks.

Also you should prefer a phone with more than one sattelite system supported

In my Car QC3 works absolute fine. Use a very good cable here! In my expierience USB3 is not a reliable connection... most cables loose contact at minimal change of position

[P Wat]

IMHE -OsmAnd works well (normally) on Motorola x Force.  Route calc is sometimes a bit slow.  Battery is good.

To conserve power:-

Turn off all unwanted apps, bluetooth, etc.

Reduce screen brightness if practicable.

Rely mainly on voice directions.

Use "Automatic screen on/off".

Carry a solar battery as backup to use at the end of the day if necessary.

Paul W