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MoodyM

macrumors 6502a
Original poster
Aug 14, 2008
778
24
In the new battery stats page, what does "low signal" mean under the app name?
 

Yun0

macrumors 68000
Jun 12, 2013
1,548
821
Winnipeg, Canada
exactly what it says, battery thats used when the phone is increasing its transmit power in attempt to hold a signal with its tower
 

MoodyM

macrumors 6502a
Original poster
Aug 14, 2008
778
24
Ok thanks.

Bizarrely my Messages app has used 25% of my battery today!
 

rawCpoppa

macrumors 6502a
Feb 23, 2010
645
707
Seems to not only be limited to the phone app.

6ejery8y.jpg
 

rawCpoppa

macrumors 6502a
Feb 23, 2010
645
707
Yeah it seems to show what app at the time was drawing a lot of power under low signal.
 

ibis ghost

macrumors member
Nov 26, 2013
46
2
Mine is showing low signal with 37%. However ever since the update I can't get above 2-3 dots for signal strength.
 

wassup121

macrumors regular
Sep 10, 2010
135
34
Yeah when the phone has low signal (1 bar out of 5), the phone tries extra hard to obtain a signal, thus killing the battery, and also making the phone warm.
 

Xenc

macrumors 65816
May 8, 2010
1,039
252
London, England
Could a badly cut sim cause low signal?

Not at all. Low signal is caused by poor reception or cell tower issues. This results in your phone to use more battery as it attempts to maintain the connection whilst searching for a stronger one.

If you're in a area where you know you won't have signal for a while - such as underground on a train - switch to Airplane Mode. You will save a lot of battery as the phone won't constantly be making failed attempts at finding a signal.
 
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