Battery Drainage on Mobile

Mar 16, 2019 2:48AM PDT

Hello Everyone!
I’m not sure where to post this question, or even if it is “allowed” in CNET Forums, so apologies if it is not allowed!
I have a Samsung Galaxy S4 Active.
I have shared WiFi from my neighbour - (I hasten to add With His Permission!) - and Internet access only by WiFi. (The Data is turned off to work only by WiFi)
At bed time, I turn of my WiFi on the phone, after charging the phone to 100%. In the past the battery usually dropped down to about 94% to 91% during the night.
During the past week or so, it has dropped to around 38% to 40%.
I do not recall the date when I downloaded MalwareFox but it was fairly recently – in the last two weeks.
In case the battery drainage might be connected to the installation of this new app, I Forced Stop of it last evening.
This morning the battery was down to 46%.
I would be grateful for any insight or advice as to what might be causing the battery to drain at this new rate, and how to stop it happening!
Thanks in advance,


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Sounds normal to me.
Mar 16, 2019 5:52AM PDT

Any app added which is ad supported does tend to hit battery use. I've done far too much testing and if you want to drop battery use you uninstall every app you can. It must be done to the point of pain and more. Only those new to this seem to disagree.

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Battery Drainage on Mobile / Sounds normal to me.
Mar 17, 2019 2:39AM PDT

Hello Bob,
Nice to “see” you again, and thank you for replying to my question, received yesterday.
Whilst I accept your explanation regarding the use of “Ad Supported” apps, I would like to mention that I have delayed my reply to yours, whilst I un-installed MalwareFox, turned off my mobile, removed the battery for 5 minutes and replaced it and restarted the phone. Last evening I went through my usual ‘routine’ of charging the battery to 100%, and switching off the WiFi of the phone before I went to bed.
This morning the battery was showing 51%. Not what I hoped for!
What “sounds normal” to you, is not what has been “normal” for my phone, as since I have had it for over a year now, it has always only lost less than 10% overnight. Maybe my Installation of the antimalware app has awoken some internal battery ‘power-eater’ and it will now continue to lose that almost half-charge overnight, I just wish I could stop it and revert to what was happening before!
Thanks again, Bob, til next time - all the best!


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There is more
Mar 17, 2019 6:13AM PDT

Such as the phone is suffering aging issues but we always give everything a try before we go to the phone is old or needs repair. Even if the cellular part of the phone is on THAT could be it as the amount of power the phone uses to keep in contact with the carrier is VARIABLE!

I won't write all here or a dissertation about how a mobile phone changes the power output of the radio depending on factors. Just not going to get into that but it is a factor about variable battery use.

Your tests are fine but only tell so much. A new phone or phones would have to be tested to see if this is hardware again. Batteries flake out and age poorly.

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There is more
Mar 17, 2019 6:44AM PDT

Thanks again, Bob,
I must admit that I hadn't even considered that it may be the battery - that just shows my ignorance!
I can't really think of any other "tests" that I am able to do. There are a number of switched off apps on the phone anyway, and I do not intend to turn them on again. and as the phone was working well enough with hardly any battery discharge overnight, I may well have a go at getting a new battery. They appear to be only about US$ 8, which works out at around just over €7 - not the end of the world!
So it may well be that that would be my only option.
Many thanks again for your advice and input.

I am sure that I will have a "next time" so until then! -



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Thanks for putting up with me here.
Mar 17, 2019 2:02PM PDT

Just trying to avoid hardware replacement until the end.

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Thanks for putting up with me here.
Mar 18, 2019 2:50AM PDT

Hi, Bob,
There is absolutely no question of me "putting up" with you on this forum.
You and your other helpful guy - Kees - have been instrumental in helping me with many problems that I have had over the years. So it is I who should be apologising to you for entering such "silly" problems for help.

I actually have a laptop problem that is waiting to be fixed, but I shall try some attempts at fixing it myself before I come back for your help!

Kind regards,

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Re: putting up
Mar 18, 2019 3:39AM PDT

Hi Colin,

It's always a pleasure to help you, because you are so cooperating yourself. That is, you state your problem clearly, and you reply when that's necessary.
So don't hesitate to ask about your current problem if you can't fix it yourself. We're here to help you.

Post was last edited on March 18, 2019 3:42 AM PDT

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putting up
Mar 18, 2019 4:28AM PDT

Hello Kees!
Thanks for "Jumping In" - nice to see you again!
I well may post my laptop question if I can't sort it out myself! (It will be about my present " aurora borealis" appearing on the monitor! However, more on that if I fail in my "fixing attempts"!
We have sunshine here in Galicia, in the north of Spain at present, I hope you are having good weather in your more northern country!

Kind regards,

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putting up/ Information attachment
Mar 28, 2019 5:00AM PDT

To whoever it may concern,

I',m not sure how to post this, but I received an email notification with the heading "Try rooting your phone" - I clicked on the link and I am continually taken a page with a dog's face wearing dark glasses and the words

You are here in error. Let’s not point fingers.
Instead, use your paws to check out some
amazing stories below."

The text on a blue background!

I deleted the apps that I had recently downloaded and Installed and the problem is how solved!

Thanks to whoever posted the unread information,


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Re: link
Mar 28, 2019 5:56AM PDT

That really looks like a mail with a bad link to a page on Whoever sent it made some mistake. It has nothing to do with anything to your PC.

Please forward the mail to Lee Koo, so he can have a look at it and (if it was an email from somebody at cbs) tell the sender about the mistake he made.

Please reply here if you forwarded it, so I can remove part of this post.

Thanks for your cooperation!

Note: Post edited by Forum admin to remove email address.

Post was last edited on March 28, 2019 9:22 AM PDT

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Link (Second attempt - succesful!)
Mar 28, 2019 8:38AM PDT

Hi Kees,
Forgive my silly words in my previous reply, having studied your last reply I removed the parenthesis and inserted the sign "@" and the email seems also to have been sent! I hope that Le Koo won't get crossed eyes seeing the same question in both the address you gave and the 'messageboard' address.


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Hi Colin,
Mar 28, 2019 9:39AM PDT

I got your email in regards to the forum tracked discussion email you received. Thank you for forwarding it to me and thank you Kees for guiding him.

The reason why you are seeing the CNET 404 page for that particular forum link is because while that post was initially available here in this thread, it was later deleted by us because it was considered spam/advertisement. So in a nutshell, the link wasn't bad, but the content was and it was deleted.

I hope this clarifies what happened and I'm sorry for any confusion.

Let me know if you have any other questions. Thanks again, Colin.


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Hi Colin
Mar 29, 2019 5:13AM PDT

Hello Lee,
Many thanks for your explanation, and my thanks to Kees also, for directing me to you.
I have actually solved the problem and would not have required to follow any instruction, but nevertheless, I am now satisfied that the removal of the post is the cause and not my laptop! (Being somewhat "technically challenged" most things confuse me!)



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You're most welcome!
Mar 29, 2019 10:02AM PDT

Have a great weekend, Colin!


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