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  1. #1
    Wierd iPhone battery usage.
    Sawday's Avatar
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    Wierd iPhone battery usage.
    While in the US, using her UK iPhone and sending the occasional whatsapp messages whilst on free wifi hotspots, my wife's phone never used more than 15% charge each day. Today, three hours out of Heathrow and 4 texts later and already battery is down to 65%. Wi-fi is turned off, background updating is turned off. Any ideas as to what's going on? Is this due solely to searching for a phone signal (on the M25/M1?)
    Last edited by Sawday; 01-20-2016 at 08:43 AM.
    Experience teaches you to recognise a mistake when you make it again.

  2. #2
    Wierd iPhone battery usage.
    pigoo3's Avatar
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    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    Quote Originally Posted by Sawday View Post
    Is this due solely to searching for a phone signal (on the M25/M1?)
    This was going to be my first guess (searching for signal). I'm not familiar with the M25/M1 motorways. But I'm guessing they are similar to the highways here in the US…with cellphone towers dotted along to roadway. Maybe there's gaps in the service or maybe something to do with the cell service provider.

    Is this iPhone a recent purchase…or did you guys change cellphone service providers recently? If not…is the iPhone's battery use different now than before the trip to the US?

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  3. #3
    Wierd iPhone battery usage.
    vansmith's Avatar
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    Oct 19, 2008
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    Quote Originally Posted by Sawday View Post
    Is this due solely to searching for a phone signal (on the M25/M1?)
    It could very well be. You might want to check the battery usage (Settings > Battery) and see how much was used for "No Cell Coverage." I see on mine for instance that this accounts for 3% of my usage in the last 24 hours.
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  4. #4
    Wierd iPhone battery usage.
    Sawday's Avatar
    Member Since
    Nov 19, 2006
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    Your Mac's Specs
    iMac: 27”, 3.4 GHz, 16Gb RAM. iPad2, iPad mini4, iPhone5s
    No change to provider, phone is a 3 years old 4s. Vansmith - thanks for that info I wasn't aware that 'No Cell coverage' was an option - my 5s has 'low signal' I guess that's the same thing. Interesting stats there - I see that sending just 7 texts ranging from 2 ("OK") to 45 letters has used 21% of battery in the last 24 hours and 'Home and Lock Screen' has consumed 44% - whats that all about!!.
    Experience teaches you to recognise a mistake when you make it again.

  5. #5
    Wierd iPhone battery usage.
    pigoo3's Avatar
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    May 20, 2008
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    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    Quote Originally Posted by vansmith View Post
    You might want to check the battery usage (Settings > Battery) and see how much was used for "No Cell Coverage." I see on mine for instance that this accounts for 3% of my usage in the last 24 hours.
    Thanks for the tip. Is this on an iPhone? When I go to (Settings > Battery)…there's no "battery" choice.

    Thanks,

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  6. #6
    Wierd iPhone battery usage.
    Sawday's Avatar
    Member Since
    Nov 19, 2006
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    York, UK
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    1,551
    Your Mac's Specs
    iMac: 27”, 3.4 GHz, 16Gb RAM. iPad2, iPad mini4, iPhone5s
    Looks like this is a newer option. I have it on my 5s, but it's not on my wife's 4s with an earlier OS.
    Experience teaches you to recognise a mistake when you make it again.

  7. #7
    Wierd iPhone battery usage.
    vansmith's Avatar
    Member Since
    Oct 19, 2008
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    Toronto
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    Your Mac's Specs
    Early 2015 13" rMBP
    Quote Originally Posted by pigoo3 View Post
    Thanks for the tip. Is this on an iPhone? When I go to (Settings > Battery)…there's no "battery" choice.
    What version of iOS are you using? In iOS 9.2, this is what I see when I go to Settings > Battery (towards the bottom there, I have a "No Cell Coverage" listing):

    IMG_0713.PNG
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  8. #8
    Wierd iPhone battery usage.
    pigoo3's Avatar
    Member Since
    May 20, 2008
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    Your Mac's Specs
    2011 17" MBP 2.2ghz, 16gig ram, OS 10.11.6
    Quote Originally Posted by Sawday View Post
    Looks like this is a newer option. I have it on my 5s, but it's not on my wife's 4s with an earlier OS.
    Quote Originally Posted by vansmith View Post
    What version of iOS are you using? In iOS 9.2, this is what I see when I go to Settings > Battery (towards the bottom there, I have a "No Cell Coverage" listing):
    This is what I figured. I have an iPhone 5 with iOS 7. One of these days I'll upgrade!

    Thanks,

    - Nick
    - Too many "beachballs", read this: Beachballs
    - Computer seems slower than it used to? Read this for some slow computer tips: Speedup
    - Almost full hard drive? Some solutions. Out of Space
    - Apple Battery Info. Battery

  9. #9
    Wierd iPhone battery usage.
    badshoehabit's Avatar
    Member Since
    Aug 02, 2011
    Location
    Tyneside, UK
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    1,460
    Your Mac's Specs
    MBP Retina late 2015 15.4" 16GB 2.5 GHz OS Mojave; iPhone 7 128gb; iPad Mini 2, 32gb
    My battery frequently says it uses 50% or more in a 24 hour period on Home and Lock Screen. Despite having it set to 'never' enable auto lock, I have to use my password dozens of times a day to access apps. OS 9.2.1 as of today.

    Any thoughts?

    Solved this - needed to time change setting for 'require password'
    Last edited by badshoehabit; 01-22-2016 at 12:52 PM.

  10. #10
    Question Phone is roaming perhaps?
    I am told roaming is a battery drain. Just a supposition. I am by no means as expert.

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