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IlkkaP is offline IlkkaP
2013-12-23 , 10:10
Posts: 48 | Thanked: 128 times | Joined on Dec 2009
#1
Here is a very interesting blog
http://reviewjolla.blogspot.fi/2013/...nsumption.html

Basically, NFC is always switched on and it should be switched on only when the back cover is removed. According to the blog, the forthcoming bug fix could increase idle battery life from around 48 hours to near 500 hours.

This bug was found & analysed by Jolla community. I don't know any other phone maker where the paying customers are so deeply involved in product development & testing... great testament to Jolla community!

Update/Clarification:It has been tentatively confirmed (as per the blog above) that Jolla idle state battery consumption will decrease from 2 % per hour to 0.2 % per hour when tohd service is stopped (giving maximum battery life of up to 100 / 0.2 % = 500 hours).

It is not confirmed that removing The Other Half, removing the NFC label from The Other Half, or inserting a tin foil between the NFC reader and the NFC label has any effect on battery consumption.

Update 2: The blog mentioned above contains step-by-step instructions for stopping the service... and according to the blog, the "hardware method" (a.k.a. DIY tinfoil) works, too.
Last edited by IlkkaP; 2013-12-24 at 09:04.
 

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jsiren is offline jsiren
2013-12-23 , 10:28
Posts: 64 | Thanked: 69 times | Joined on Dec 2013 @ Joensuu, Finland
#2
I disabled tohd as described in the comments (systemctl mask tohd.service; systemctl stop tohd.service) since I only have one Other Half anyway

I'm now charging the battery to full, let's see what happens. Until now my average drop has been abot 10% per hour.
 

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rooster13 is offline rooster13
2013-12-23 , 10:37
Posts: 319 | Thanked: 221 times | Joined on Jan 2010 @ Finland
#3
Originally Posted by jsiren View Post
I disabled tohd as described in the comments (systemctl mask tohd.service; systemctl stop tohd.service) since I only have one Other Half anyway

I'm now charging the battery to full, let's see what happens. Until now my average drop has been abot 10% per hour.
How's the battery life now?
Any improvement when tohd service disabled?
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bertjefred is offline bertjefred
2013-12-23 , 10:45
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#4
I also am checking it. will report later.
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mousse04 is offline mousse04
2013-12-23 , 10:50
Posts: 443 | Thanked: 282 times | Joined on Oct 2011 @ Grenoble, France
#5
same here. I will let you know ...
 

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jsiren is offline jsiren
2013-12-23 , 11:00
Posts: 64 | Thanked: 69 times | Joined on Dec 2013 @ Joensuu, Finland
#6
Originally Posted by rooster13 View Post
How's the battery life now?
Any improvement when tohd service disabled?
Wait until I have a chance to try it out. It's almost charged now
 

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siggi_digital is offline siggi_digital
2013-12-23 , 11:16
Posts: 8 | Thanked: 3 times | Joined on Dec 2013
#7
i made a hardware hack, just put thinfoil on the nfc receiver. Battery percentage dropped only 2% in six hours, it was in the night without use, Wi-Fi and mobile was on +email sync .
 

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DrWilken is offline DrWilken
2013-12-23 , 11:17
Posts: 515 | Thanked: 266 times | Joined on Nov 2009 @ Oelsted, Denmark
#8
If You want to disable TOHC service only until next reboot You can add --runtime to the 'mask' command... ;-)

Code:
systemctl mask --runtime tohd.service; systemctl stop tohd.service
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seiichiro0185 is offline seiichiro0185
2013-12-23 , 11:17
Posts: 270 | Thanked: 610 times | Joined on Nov 2007 @ Leipzig/Germany
#9
I'm also trying it right now, off the charger for about 45min now, battery still reports 100%
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DrWilken is offline DrWilken
2013-12-23 , 11:19
Posts: 515 | Thanked: 266 times | Joined on Nov 2009 @ Oelsted, Denmark
#10
Originally Posted by siggi_digital View Post
i made a hardware hack, just put thinfoil on the nfc receiver. Battery percentage dropped only 2% in six hours, it was in the night without use, Wi-Fi and mobile was on +email sync .
I don't quite understand how that should prevent the NFC receiver from using precious power...?

It just prevents it from connecting to the NFC tag on the Other Half...
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