Car Navigation with Powerconsumtion under 500mAH - Nexus 4 Q&A, Help & Troubleshooting

Hi,
i tried to use the nexus 4 as car navigation but i've a problem. The power consumtion in the scenario is to high.
Szenario:
- Bluetooth on to pairing with car radio for using the external speaker
- Display always on to watch the route.
- GPS on for navigation
- UMTS on to get latest traffic messages
As summary I need more power than 500mAH from my USB charger and the accu gooes slowly down.
I know that I can use a more powerfull charger, but my question is.. is there a way to use the nexus 4 in this szenario under 500 mAH?

Underclock, undervolt, offline cores, low screen brightness.
Ull lose performance alright
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zorginho said:
Underclock, undervolt, offline cores, low screen brightness.
Ull lose performance alright
Inviato dal mio Nexus 4 utilizzando Tapatalk
Click to expand...
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low screen brightness make no sense because it's necessray to see always the route, but disable one core is may a solution.
It can be profiled with tasker if the navigation SW starts

And maybe another nav app?
Sent from my Nexus 4 using xda app-developers app

Related

Overheats nexus

Hello guys, a curiosity, um bit of time on my nexus s i9023 overheats and becomes very hot after crashes and reboots itself Happen to you? There are solutions. Sorry forma my english
Inviato dal mio Nexus S con Tapatalk 2
hey
i have the same problem only when running aokp and miui roms.
Let me guess, you have overclocked to 1300 or 1200 MHz?
Sent from my Nexus S using Tapatalk 2
Yeah. We need to know when it overheats. Just saying it does doesn't help.
Sent by pocket technology
You are right. Then RombMIUI 2.6.22 kernel with air kernel. CFQ scheduler. Governor smartassv2 and freq. Min 200 and max 1200. Same problem with aokp. And even changing kernel example that of mat1x 22 nothing new.
Inviato dal mio Nexus S con Tapatalk 2
jojoost said:
Let me guess, you have overclocked to 1300 or 1200 MHz?
Sent from my Nexus S using Tapatalk 2
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Freq. Min 200 and max 1200
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chronophase1 said:
Yeah. We need to know when it overheats. Just saying it does doesn't help.
Sent by pocket technology
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Overheat during normal use, like surfing the Internet and surf the xda forums with tapatalk. But especially when I use it and is connected to the charger.
Inviato dal mio Nexus S con Tapatalk 2
supilota said:
Overheat during normal use, like surfing the Internet and surf the xda forums with tapatalk. But especially when I use it and is connected to the charger.
Inviato dal mio Nexus S con Tapatalk 2
Click to expand...
Click to collapse
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Have you tried scaling down to 1ghz? That should be more than enough for daily tasks.
Sent by pocket technology
Overheating caused most of the time by
- poor 3g field power in your environment or
- by applications running endless in the background
For the first case just switch to 2g and see if it helps, for the second case uninstall any apps which you dont need or install a program which shows you the processor load: normally it shouldn't be over 4-10%
chronophase1 said:
Have you tried scaling down to 1ghz? That should be more than enough for daily tasks.
Sent by pocket technology
Click to expand...
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I tried but it has not changed anything. It is becoming a toaster. I can cook two eggs.
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bangkokguy said:
Overheating caused most of the time by
- poor 3g field power in your environment or
- by applications running endless in the background
For the first case just switch to 2g and see if it helps, for the second case uninstall any apps which you dont need or install a program which shows you the processor load: normally it shouldn't be over 4-10%
Click to expand...
Click to collapse
Surely it is because in this period is always on 3g, now I try to change to 2g. While with regard to the applications. The only WhatsApp are installed, and k9mail ebay app. Alla in background
Inviato dal mio Nexus S con Tapatalk 2
Is your phone constantly awake(massive blue bar compared to screen on)? A rogue app can cause excessive heat. Snag CPU spy and see if your phone is actually going to sleep
Sent by pocket technology
yup, use cpu spy to check if its actually going to sleep or if its running at max freq. then check the battery and apps to see what has been running the most. I've noticed that Maps is usually the culprit
My nexus became very hot too when i plug the samsung car charger
Sent from my Nexus S using xda app-developers app
Grousso said:
My nexus became very hot too when i plug the samsung car charger
Sent from my Nexus S using xda app-developers app
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Click to collapse
I realised that during (USB) charging the system process runs at 50-60% CPU. It could be the reason... anybody the same experience?
USB only charges around like 500ma vs the 750 the stock charger puts out. The phone doesn't fully go to sleep while charging via USB. That may explain the cpu speed, although that seems kinda high. Mine when hooked up via USB is probably 200mhz.
Sent by pocket technology.
Mine is original (no root) and sometimes burns my leg... when it's inside my pant pocket... :cyclops:

I don't know what happened

Hi men I have a problem yesterday when I went to sleep my phone has 90% of battery today when I have tried to turn it on it has the 0% of battery I'm on faux kernel with pa 3.1 any suggestion?
Inviato dal mio Nexus 4 con Tapatalk 2
masterchif92 said:
Hi men I have a problem yesterday when I went to sleep my phone has 90% of battery today when I have tried to turn it on it has the 0% of battery I'm on faux kernel with pa 3.1 any suggestion?
Inviato dal mio Nexus 4 con Tapatalk 2
Click to expand...
Click to collapse
Get gsam battery monitor or betterbatterystats and post your results here after a day of usage. There are many reasons for overnight battery drain (poor reception, running apps, etc).
Sent by carrier pigeon
R: I don't know what happened
I don't have problem during the day with the battery ...
Inviato dal mio Nexus 4 con Tapatalk 2
Any weird config for sleep/screen off ?
My Nexus 7 tablet last night left its screen on overnight for no reason and drained the battery completely. Turns out it was an updated app that autostarted while I was asleep and re-requested new SuperSU permissions. For some reason the SuperSU dialog box switches the screen on and never goes inactive. Might have been what happened to you?
R: I don't know what happened
Maybe yes tonight I try to left the phone with the screen off and unplugged and she what happen if tomorrow the phone won't start I will reflash all stock and she if it is a ROM o kernel related problem maybe is something related to hardware?
Inviato dal mio Nexus 4 con Tapatalk 2
Download betterbatterystats and find your wake lock.
Sent from my Nexus 4 using xda premium
enri do what suggested,trace all yours apps wakelock with both suggested apps (etterbatterystats and gsambatterymonitor.
post here the results after a night overdrain and sure someone can help you.hard to tell of hw failure without those data..
hope you solve the issues,bye!:fingers-crossed:
why not go to bed with your phone plugged in??
probably because his battery was at 90%...and everyone would think there's no need to charge it..and after that he would know the true reason of that strange behaviour,being all good during the day.
I think that it's not a low\poor reception issue,because it's not present during the day where he move and go through different places and lock with different gsm cells...it it's related to signal,i think he would had that issue also with his precedent phone,the maguro gnex.)
R: I don't know what happened
I see that faux kernel app cause me a lot of wake lock....
Inviato dal mio Nexus 4 con Tapatalk 2

First issue I've noticed..

I have snap800 version and brightness set to 100%.
I noticed that after some minutes of usage my phone becomes hot and brightness goes down. This happens very often. Did you notice the same thing?
Inviato dal mio SM-N9005 con Tapatalk 4
mouse100 said:
I have snap800 version and brightness set to 100%.
I noticed that after some minutes of usage my phone becomes hot and brightness goes down. This happens very often. Did you notice the same thing?
Inviato dal mio SM-N9005 con Tapatalk 4
Click to expand...
Click to collapse
Unsure about temperature but look in Settings -> Display, ensure auto brightness is off, change colour settings to standard and turn off adaptive brightness and similar stuff.
Sent from my SM-N9005 using xda app-developers app
The S4 has the same issue. After a while the screen dims down. Even on the GOOGLE EDITION version.
It doesn't happen on CM roms though do it's a TW thing.
Sent from my GT-I9505G

Help me for GPS please!

Hello wararmy!
I have a question about GPS of nexus 4
Is there a mod or tricks that upgrade or get a better and more precision GPS signal and fix?
I have an error of 4 meters.. I need better precision..
Thanks!
Inviato dal mio Nexus 4 con Tapatalk 4
Have you tried correcting the location of the ntp servers?
Sent from my N4, wanna know what I am doing? Check http://team-fun.eu
Best you can hope for with most smartphones is 2-3 meters (due to battery life priority & low chipsets used etc)
Decidated GPS units can do around 1 meters
To maximise accuracy, the same rules apply as normal GPS, open sky, clear weather, no tall buildings to minimise reflections
I use TopNTP.
works fine for me.
Sent from my Nexus 4 using xda app-developers app
What is ntp server?
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Arkaineshow said:
What is ntp server?
Inviato dal mio Nexus 4 con Tapatalk 4
Click to expand...
Click to collapse
Country server which you add manually in gps settings for faster location locking.
To be honest this phone shouldn't need such mods.
It gets super fast signal wherever I am. Only cases can create gps locking problems.
Sent from my NookColor using Tapatalk 4

[MOD] Lower Brightness Display

Hi!
I'm looking for an application that can lower the voltage of the display.
I do not try to make an application filter for the screen. I need a real decrease in brightness.
Is there a solution?
UP: no solution?
Inviato dal mio Nexus 4 utilizzando Tapatalk
Well, gravitybox xposed module allows adjusting the screens brightness settings.
Sent from my Nexus 4 using XDA Free mobile app
You can use lux auto brightness too.
Enviado de meu Nexus 4 usando Tapatalk
Oxious119 said:
Well, gravitybox xposed module allows adjusting the screens brightness settings.
Sent from my Nexus 4 using XDA Free mobile app
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Click to collapse
Don't work on my Nexus4... On your own?
Inviato dal mio Nexus 4 utilizzando Tapatalk
I'm not sure if it's possible as of now to edit the actual voltages of the display, but I was able to achieve an extremely dark display (barely visible in pitch black room) by doing this:
Installing AK kernel, then installing synapse. Going to the tab labeled gamma, and ticking a box to set the LCD backlight to be raised exponentially.
I would highly recommend trying this. It should only take a moment.
Connor Baker
I already use the kernel AK.
I installed the application synaps, but I did not find any Tab gamma nor screen...
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dix93 said:
I already use the kernel AK.
I installed the application synaps, but I did not find any Tab gamma nor screen...
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Click to expand...
Click to collapse
Connor Baker
I reinstalled the application and found the Tab gamma...!
Fantastic, this is the great solution!
Thank you!
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Damn, with this solution, I realized that I have problems with automatic brightness adjustment. This is always the minimum value .. Is it possible to somehow set the brightness levels right?
Inviato dal mio Nexus 4 utilizzando Tapatalk
dix93 said:
Damn, with this solution, I realized that I have problems with automatic brightness adjustment. This is always the minimum value .. Is it possible to somehow set the brightness levels right?
Inviato dal mio Nexus 4 utilizzando Tapatalk
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I believe that CM may allow you to set the levels for automatic brightness, but I'm not sure.
Connor Baker

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