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When apps freeze...? Do processes

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Name: justinblue
Date: November 27, 2008 at 12:47:54 Pacific
OS: iPhone OS
Subcategory: iPhone
Comment:


Now that I'm downloading apps from the app store, I have a few
questions that I'm hoping someone can help me with.


1. If an app isn't running, then just having it installed on my iPhone
won't do anything to affect some app I'm currently running, will it?

I ask because I downloaded 3 or 4 new apps yesterday, didn't run any
of them, but noticed that a couple other programs (reQall and
BeeJiveIM) froze on me this morning.


2. When I leave an app to go to the Home screen, have I compeletely
closed that app? Or is it in some way still running "in the
background?" What if it was in the middle of sending or receiving
data when I closed it?


3. If an app freezes or behaves badly and I close it -- either with a
quick push to the Home button or a 6-second push to the Home button --
is that app now safely out of my memory? Am I now "clean," or should
I restart the whole iPhone to make sure everything is "clean?"

I don't know exactly what I mean by "clean" -- presumably that I'm
100% back to the state I was in before I ran the app that froze --
that it hasn't left any processes running in the background, etc.


Thanks in advance.


By the way, is this newsgroup the best place to ask questions like
this? Or is there some Apple-related forum or website that would be
better for some reason?

archived from misc.phone.mobile.iphone



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Response Number 1
Name: justinblue
Date: November 27, 2008 at 13:47:54 Pacific
Reply:

In article <1d1ui417fr33ipqt6kdgjod0h396paun2f@4ax.com>, dgates
<dgates@somedomain.com> wrote:

> Now that I'm downloading apps from the app store, I have a few
> questions that I'm hoping someone can help me with.
>
> 1. If an app isn't running, then just having it installed on my iPhone
> won't do anything to affect some app I'm currently running, will it?

nope, it just takes up space.

> 2. When I leave an app to go to the Home screen, have I compeletely
> closed that app? Or is it in some way still running "in the
> background?" What if it was in the middle of sending or receiving
> data when I closed it?

pressing home is basically a quit message to the app. depending on how
it's written, it may finish what it's doing before quitting.

> 3. If an app freezes or behaves badly and I close it -- either with a
> quick push to the Home button or a 6-second push to the Home button --
> is that app now safely out of my memory? Am I now "clean," or should
> I restart the whole iPhone to make sure everything is "clean?"

it's 'clean', however, a reboot might solve the crashing problem.
without actually seeing crash logs, it's just a guess why it froze and
if the app is buggy, it may crash again.

> By the way, is this newsgroup the best place to ask questions like
> this? Or is there some Apple-related forum or website that would be
> better for some reason?

there's a discussion forum at apple as well as iphone related web sites.

archived from misc.phone.mobile.iphone


0

Response Number 2
Name: justinblue
Date: November 27, 2008 at 14:47:54 Pacific
Reply:

On Nov 27, 3:47=A0pm, dgates <dga...@somedomain.com> wrote:
> Now that I'm downloading apps from the app store, I have a few
> questions that I'm hoping someone can help me with.
>
> 1. If an app isn't running, then just having it installed on my iPhone
> won't do anything to affect some app I'm currently running, will it?
>
> I ask because I downloaded 3 or 4 new apps yesterday, didn't run any
> of them, but noticed that a couple other programs (reQall and
> BeeJiveIM) froze on me this morning.
>
> 2. When I leave an app to go to the Home screen, have I compeletely
> closed that app? =A0Or is it in some way still running "in the
> background?" =A0What if it was in the middle of sending or receiving
> data when I closed it?
>
> 3. If an app freezes or behaves badly and I close it -- either with a
> quick push to the Home button or a 6-second push to the Home button --
> is that app now safely out of my memory? =A0Am I now "clean," or should
> I restart the whole iPhone to make sure everything is "clean?"
>
> I don't know exactly what I mean by "clean" -- presumably that I'm
> 100% back to the state I was in before I ran the app that froze --
> that it hasn't left any processes running in the background, etc.
>
> Thanks in advance.
>
> By the way, is this newsgroup the best place to ask questions like
> this? =A0Or is there some Apple-related forum or website that would be
> better for some reason?

I submitted a lengthy post today to apple-iphone @yahoogroups.com that
answers your question.

Look for ....

TIP: iPhone Application Crashes: Preventing & Fixing

archived from misc.phone.mobile.iphone


0

Response Number 3
Name: justinblue
Date: November 27, 2008 at 15:47:54 Pacific
Reply:

On Thu, 27 Nov 2008 16:00:50 -0800 (PST), 4phun <vic.healey@gmail.com>
wrote:

>On Nov 27, 3:47 pm, dgates <dga...@somedomain.com> wrote:
>> Now that I'm downloading apps from the app store, I have a few
>> questions that I'm hoping someone can help me with.
>>
>> 1. If an app isn't running, then just having it installed on my iPhone
>> won't do anything to affect some app I'm currently running, will it?
>>
>> I ask because I downloaded 3 or 4 new apps yesterday, didn't run any
>> of them, but noticed that a couple other programs (reQall and
>> BeeJiveIM) froze on me this morning.
>>
>> 2. When I leave an app to go to the Home screen, have I compeletely
>> closed that app?  Or is it in some way still running "in the
>> background?"  What if it was in the middle of sending or receiving
>> data when I closed it?
>>
>> 3. If an app freezes or behaves badly and I close it -- either with a
>> quick push to the Home button or a 6-second push to the Home button --
>> is that app now safely out of my memory?  Am I now "clean," or should
>> I restart the whole iPhone to make sure everything is "clean?"
>>
>> I don't know exactly what I mean by "clean" -- presumably that I'm
>> 100% back to the state I was in before I ran the app that froze --
>> that it hasn't left any processes running in the background, etc.
>>
>> Thanks in advance.
>>
>> By the way, is this newsgroup the best place to ask questions like
>> this?  Or is there some Apple-related forum or website that would be
>> better for some reason?
>
>I submitted a lengthy post today to apple-iphone @yahoogroups.com that
>answers your question.
>
>Look for ....
>
>TIP: iPhone Application Crashes: Preventing & Fixing


You've posted good replies in the past, so I won't complain too much
about this one, but it didn't really answer my questions. It answered
a question I didn't ask, which was "If my iPhone freezes or has
problems, what are some things I can try?" But it didn't really
answer the questions above.

For example:

1. If an app isn't running, then just having it installed on my iPhone
won't do anything to affect some app I'm currently running, will it?

2. When I leave an app to go to the Home screen, have I compeletely
closed that app? Or is it in some way still running "in the
background?"

etc.


Still, the answer you posted is full of enough tips that I'll see if I
can paste it here.


And thanks for the tips.


============================

I found an interesting bit of knowledge related to why apps crash on
the iPhone. It is below in 'my tip'. BTW when you install any type of
new program on the iPhone it is very desirable to power the iPhone off
completely and then reboot. A lot of future problems go away if you do
that. Now the tip.

TIP

A number of users report crashes from various iPhone applications,
both Apple-supplied and third-party. The most common iPhone crash is
one where the application you are working in suddenly ceases
operation, the screen momentarily turns black, then the iPhone home
screen appears. In a slightly more serious manifestation, the crash
will result in a complete freeze where the iPhone is unresponsive.

Sometimes, when an application crashes, it will refuse to properly
launch thenceforth, crashing immediately after its icon is tapped.

Generally, one of the three following procedures will resolve this
issue. Try them in order.

Full reboot Perform a hard reboot of your iPhone as follows: Turn the
iPhone off completely, by pressing and holding the Sleep/Wake button
(on top of the device) for a few seconds then slide the red slider.
Turn it back on by holding the Sleep/Wake button until the Apple logo
appears. This can clear potentially problematic data, preventing some
crash-types.

Restore the iPhone Try performing a restore of your iPhone. Connect it
to your Mac or PC and, in iTunes, click the Restore button under the
Summary tab. Restoring the phone will erase contacts, calendars,
photos and other data on the phone, but will restore automatically
backed-up information including text messages, notes, call history,
contact favorites, sound settings, widget settings, etc.

Reinstall the application

* Touch and hold any application icon the icons begin to shake.
* Tap the "x" in the corner of the application you want to delete.
* Tap Delete.
* Press the Home button.
* Download the application again, either from your iPhone or your
desktop computer (there will be no additional charge for the
re-download)

If an application freezes or becomes unresponsive, force-quit it by
holding down the home button for several seconds. This can eliminate
problematic or hung processes that might be draining the battery.

To prevent future crashes, keep adequate free space on the iPhone's
internal memory. Like its desktop relative Mac OS X, the iPhone's OS X
operating system needs some head-room on the internal flash memory in
order to operateproperly. Try keeping at least 10% of the total space
free to potentially prevent some crashes in applications, freezes and
other problems. (That would be 1.6GB FREE on a 16GB iPhone)

As a last resort, go to the Settings application, tap General then
select the Erase All Content and Settings. This will delete all media
and data on the iPhone, as well as recent calls, etc., and all other
settings. If you perform this operation and stop experiencing crashes,
you might have problematic data being synchronized to the iPhone that
is automatically put back when the phone is restored. In this case,
you might want to go to iTunes, select Preferences from the File menu,
then iPhone and delete your backed up iPhone settings — this includes
text messages, notes, call history, contact favorites, sound settings,
widget settings. Again, one or more of these data might be
problematic.

Finding out what caused crashes Just like Mac OS X, the iPhone
generates crash reports when things go wrong. These files are sent
back to your computer whenever the iPhone is connected and
synchronized with iTunes. In Mac OS X, they're located in
/Library/Logs/Crashreporter/MobileDevice/.

archived from misc.phone.mobile.iphone


0

Response Number 4
Name: justinblue
Date: November 27, 2008 at 16:47:54 Pacific
Reply:

On Thu, 27 Nov 2008 14:35:50 -0800, nospam <nospam@nospam.invalid>
wrote:

>In article <1d1ui417fr33ipqt6kdgjod0h396paun2f@4ax.com>, dgates
><dgates@somedomain.com> wrote:
>
>> Now that I'm downloading apps from the app store, I have a few
>> questions that I'm hoping someone can help me with.
>>
>> 1. If an app isn't running, then just having it installed on my iPhone
>> won't do anything to affect some app I'm currently running, will it?
>
>nope, it just takes up space.
>
>> 2. When I leave an app to go to the Home screen, have I compeletely
>> closed that app? Or is it in some way still running "in the
>> background?" What if it was in the middle of sending or receiving
>> data when I closed it?
>
>pressing home is basically a quit message to the app. depending on how
>it's written, it may finish what it's doing before quitting.
>
>> 3. If an app freezes or behaves badly and I close it -- either with a
>> quick push to the Home button or a 6-second push to the Home button --
>> is that app now safely out of my memory? Am I now "clean," or should
>> I restart the whole iPhone to make sure everything is "clean?"
>
>it's 'clean', however, a reboot might solve the crashing problem.
>without actually seeing crash logs, it's just a guess why it froze and
>if the app is buggy, it may crash again.

That makes sense, but will the fact that it crashed, and I had to shut
it down, leave my iPhone in a state that will cause *other* apps to
also have problems?

Let's say I run some app called CrappyMazeVoicePuzzle and it crashes,
so I force it to shut. Should I be worried that a few minutes later
BeeJiveIM or Pandora will have problems because I didn't restart after
the trouble with CrappyMazeVoicePuzzle?


>> By the way, is this newsgroup the best place to ask questions like
>> this? Or is there some Apple-related forum or website that would be
>> better for some reason?
>
>there's a discussion forum at apple as well as iphone related web sites.


Thanks for all the info.

archived from misc.phone.mobile.iphone


0

Response Number 5
Name: justinblue
Date: November 27, 2008 at 17:47:54 Pacific
Reply:

On 2008-11-28, dgates <dgates@somedomain.com> wrote:
> 1. If an app isn't running, then just having it installed on my iPhone
> won't do anything to affect some app I'm currently running, will it?
>
> 2. When I leave an app to go to the Home screen, have I compeletely
> closed that app? Or is it in some way still running "in the
> background?"

The answer to both your questions is "it really shouldn't".
Apple decided, with good reason, that 3rd party apps should not be
allowed to run in the background, so pressing the Button quits such
apps completely. Theoretically there could be some sort of bug such
that running a previous app could affect a subsequent app, but I'd
be slightly surprised to be honest.

archived from misc.phone.mobile.iphone


0

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Response Number 6
Name: justinblue
Date: November 27, 2008 at 18:47:54 Pacific
Reply:


"dgates" <dgates@somedomain.com> wrote in message
news:1d1ui417fr33ipqt6kdgjod0h396paun2f@4ax.com...
>
> Now that I'm downloading apps from the app store, I have a few
> questions that I'm hoping someone can help me with.
>
>
> 1. If an app isn't running, then just having it installed on my iPhone
> won't do anything to affect some app I'm currently running, will it?
>


A far as I know our IPhones can only do one thing at a time. That goes
for running an app, or installing another one. Once you DL an app, the one
currently running closes.

--
"Money Won is Twice as Sweet as Money Earned" ... Fast Eddie Felson

JK
www.MyConeyIslandMemories.com


archived from misc.phone.mobile.iphone


0

Response Number 7
Name: justinblue
Date: November 27, 2008 at 19:47:54 Pacific
Reply:

In article <98iui4drmrgs4u0c9rei9ff22cdsioe9b9@4ax.com>, dgates
<dgates@somedomain.com> wrote:

> That makes sense, but will the fact that it crashed, and I had to shut
> it down, leave my iPhone in a state that will cause *other* apps to
> also have problems?

every app is sandboxed, so whatever it does will not affect other apps
or the phone itself.

> Let's say I run some app called CrappyMazeVoicePuzzle and it crashes,
> so I force it to shut. Should I be worried that a few minutes later
> BeeJiveIM or Pandora will have problems because I didn't restart after
> the trouble with CrappyMazeVoicePuzzle?

no.

archived from misc.phone.mobile.iphone


0

Response Number 8
Name: justinblue
Date: November 27, 2008 at 20:47:54 Pacific
Reply:

In article <492f77dc$0$14310$607ed4bc@cv.net>, spam@aol.com says...
>
> "dgates" <dgates@somedomain.com> wrote in message
> news:1d1ui417fr33ipqt6kdgjod0h396paun2f@4ax.com...
> >
> > Now that I'm downloading apps from the app store, I have a few
> > questions that I'm hoping someone can help me with.
> >
> >
> > 1. If an app isn't running, then just having it installed on my iPhone
> > won't do anything to affect some app I'm currently running, will it?
> >
>
>
> A far as I know our IPhones can only do one thing at a time. That goes
> for running an app, or installing another one. Once you DL an app, the one
> currently running closes.
>
>
>
>

With the exception of iPod of course. When playing music on the iPod
app, it will continue to play in the background while doing some other
things. Mainly with things that don't require access to the sound chip.

So you need to remember to hit the pause before quitting iPod or else it
WILL continue to play in the background, and if you have the volume
right down, you may be unaware of it running (or earphones plugged in
and scrunched up in the pocket, like I did). One flat battery
later..... ;)

--

NightStalker

archived from misc.phone.mobile.iphone


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Response Number 9
Name: justinblue
Date: November 27, 2008 at 21:47:54 Pacific
Reply:

On Fri, 28 Nov 2008 00:16:51 -0800, nospam <nospam@nospam.invalid>
wrote:

>In article <98iui4drmrgs4u0c9rei9ff22cdsioe9b9@4ax.com>, dgates
><dgates@somedomain.com> wrote:
>
>> That makes sense, but will the fact that it crashed, and I had to shut
>> it down, leave my iPhone in a state that will cause *other* apps to
>> also have problems?
>
>every app is sandboxed, so whatever it does will not affect other apps
>or the phone itself.
>
>> Let's say I run some app called CrappyMazeVoicePuzzle and it crashes,
>> so I force it to shut. Should I be worried that a few minutes later
>> BeeJiveIM or Pandora will have problems because I didn't restart after
>> the trouble with CrappyMazeVoicePuzzle?
>
>no.


That's what I thought. That's why I was surprised, when I installed
and launched iPhlix today, to read this message:

=================================

Low Memory

Your device's memory is running
low, which may cause iPhlix to
crash. Restarting your device can
help with this problem.

=================================

Any thoughts on that?

archived from misc.phone.mobile.iphone


0

Response Number 10
Name: justinblue
Date: November 27, 2008 at 22:47:54 Pacific
Reply:

In article <6b02j4hnmfb10egkslaj058om898cjellm@4ax.com>, dgates
<dgates@somedomain.com> wrote:

> >> Let's say I run some app called CrappyMazeVoicePuzzle and it crashes,
> >> so I force it to shut. Should I be worried that a few minutes later
> >> BeeJiveIM or Pandora will have problems because I didn't restart after
> >> the trouble with CrappyMazeVoicePuzzle?
> >
> >no.
>
> That's what I thought. That's why I was surprised, when I installed
> and launched iPhlix today, to read this message:
>
> =================================
>
> Low Memory
>
> Your device's memory is running
> low, which may cause iPhlix to
> crash. Restarting your device can
> help with this problem.
>
> =================================
>
> Any thoughts on that?

there are a few apps that suggest rebooting to avoid crashes.
personally, i think they're just blaming apple for bugs in their own
apps. in any event, that is a different situation than having an app
crash and affecting other apps.

that being said, some apps such as safari cache data so the next time
they're opened, they don't need to reload the pages. if other apps
need ram, then that cache gets flushed.

archived from misc.phone.mobile.iphone


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Response Number 11
Name: justinblue
Date: November 27, 2008 at 23:47:54 Pacific
Reply:

In article <Xns9B66FA42FFnoonehomecom@74.209.131.13>, Larry
<noone@home.com> wrote:

> Your only choice is to dump programs, which also dumps
> their data, you seldom use.

that won't make one bit of difference to a running application.

archived from misc.phone.mobile.iphone


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Response Number 12
Name: justinblue
Date: November 28, 2008 at 00:47:54 Pacific
Reply:

dgates <dgates@somedomain.com> wrote in
news:6b02j4hnmfb10egkslaj058om898cjellm@4ax.com:

> That's what I thought. That's why I was surprised, when I installed
> and launched iPhlix today, to read this message:
>
> =================================
>
> Low Memory
>
> Your device's memory is running
> low, which may cause iPhlix to
> crash. Restarting your device can
> help with this problem.
>
> =================================
>
> Any thoughts on that?
>
>

Unlike the vast space of memory in all sectors of your desktop of laptop
computers, mobile devices have several VERY limited memory spaces to
consider. One memory easily overlooked is called "internal memory",
which on a laptop would be kin to the internal C: drive on a Windows
box. This is a non-volatile memory where the OS stores the apps and
their databases, so you can shut the device down without losing it.
This memory is separate from the small RAM, probably something like
128KB to save the battery, the processor uses to run programs...or less.
It is also separate from the "Big Storage" bragged about in the sales
brochures for ANY mobile device, not just iPhones.

As you keep loading programs onto it, in your case from the app store
unless it's jailbroken, those programs are stored in this internal, non-
volatile, memory. Again, related to saving the load on the battery to
make it run longer, the designers limit this memory to what they think a
"normal user" would load it to. When you load it too much, according to
one of its app developers, StarMap, this happens:

"Why do I get "Low memory warning" ?
The memory resources of the iPhone are limited. When memory becomes low,
all runnig application get this signal from the system in order to
reduce their memory amount. Starmap reacts by closing all menus and
going back to the map. This can happen if information is being pushed to
your device or if you are listening to music at the same time."

This must have been what you saw when you tried to install yours. Other
apps had already reserved memory for themselves. Your 16GB memory isn't
full. It's the other memories, much smaller and faster memories, that
are too full. Your only choice is to dump programs, which also dumps
their data, you seldom use. This frees memory for your new
installation....enough we hope. it's not a bottomless pit. These are
all tiny machines running on a whisper of power at very slow bus and CPU
speeds much slower than your laptop or desktop PC or Mac.

Sorry....

archived from misc.phone.mobile.iphone


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Response Number 13
Name: justinblue
Date: November 28, 2008 at 01:47:54 Pacific
Reply:

On 2008-11-30, Larry <noone@home.com> wrote:
> Unlike the vast space of memory in all sectors of your desktop of laptop
> computers, mobile devices have several VERY limited memory spaces to
> consider. One memory easily overlooked is called "internal memory",
> which on a laptop would be kin to the internal C: drive on a Windows
> box.

That was a very long and informative article Larry, which
unfortunately suffered from the slight defect of being almost
completely wrong.

archived from misc.phone.mobile.iphone


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Response Number 14
Name: justinblue
Date: November 28, 2008 at 02:47:54 Pacific
Reply:

In article <Xns9B667BD07CF64noonehomecom@74.209.131.13>, Larry
<noone@home.com> wrote:

> >> Your only choice is to dump programs, which also dumps
> >> their data, you seldom use.
> >
> > that won't make one bit of difference to a running application.
>
> It won't as long as the running application doesn't need to STORE
> DATA....then it does....

most apps store very little data (i.e. a preference file and maybe
state information). the point is that deleting an app from flash
memory is not going to give a running app more working memory when it
runs.

> Where will it store, for instance, all those spam gifs on a commercial
> webpage if there's no memory left?

it certainly doesn't store what's downloaded off a web page in flash
memory.

archived from misc.phone.mobile.iphone


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Response Number 15
Name: justinblue
Date: November 28, 2008 at 03:47:54 Pacific
Reply:

On 2008-11-30, Larry <noone@home.com> wrote:
> As our Second Apologist,

I'm not an apologist for anything. I'm just trying to point out the
truth when people make mistakes, or in your case, just seem to post
the first thing that comes into their head without the slightest
regard as to whether it's fact or fiction.

> now that you, obviously, have the correct information.....why not
> SHARE IT WITH HIM who asked, instead of the usual dogging anyone who
> actually tries to answer his question.

It looks to me like his questions have all already been answered fine,
by myself and others. With regards to iPhlix, I suspect the other
poster who suggested it was poor programming on the part of the
iPhlix app authors was correct.

archived from misc.phone.mobile.iphone


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Response Number 16
Name: justinblue
Date: November 28, 2008 at 04:47:54 Pacific
Reply:

nospam <nospam@nospam.invalid> wrote in news:301120080042069815%
nospam@nospam.invalid:

> In article <Xns9B66FA42FFnoonehomecom@74.209.131.13>, Larry
> <noone@home.com> wrote:
>
>> Your only choice is to dump programs, which also dumps
>> their data, you seldom use.
>
> that won't make one bit of difference to a running application.
>

It won't as long as the running application doesn't need to STORE
DATA....then it does....

Where will it store, for instance, all those spam gifs on a commercial
webpage if there's no memory left?

archived from misc.phone.mobile.iphone


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Response Number 17
Name: justinblue
Date: November 28, 2008 at 05:47:54 Pacific
Reply:

Jon Ribbens <jon+usenet@unequivocal.co.uk> wrote in
news:slrngj5ane.4jv.jon+usenet@snowy.squish.net:

> On 2008-11-30, Larry <noone@home.com> wrote:
>> Unlike the vast space of memory in all sectors of your desktop of
>> laptop computers, mobile devices have several VERY limited memory
>> spaces to consider. One memory easily overlooked is called "internal
>> memory", which on a laptop would be kin to the internal C: drive on a
>> Windows box.
>
> That was a very long and informative article Larry, which
> unfortunately suffered from the slight defect of being almost
> completely wrong.
>

As our Second Apologist, now that you, obviously, have the correct
information.....why not SHARE IT WITH HIM who asked, instead of the usual
dogging anyone who actually tries to answer his question.

Tell him how it works, Mr Smartass.....

archived from misc.phone.mobile.iphone


0

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