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PO
 

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    <blockquote> <p>I'm developing an app that use Mobile Data connection (always GPRS) to upload in a loop each 5 minutes 300 kb of data.</p> </blockquote> <p>You are using whatever the user's chosen data connection is. You can elect to skip doing the work on WiFi if you want, though I am not quite sure why.</p> <blockquote> <p>In this time (between two upload) the battery is used by the Mobile Data connection?</p> </blockquote> <p>The GSM or CDMA radio is always consuming battery. It consumes more during active data transfer, but it is always powered on (except when the device is in airplane mode).</p> <blockquote> <p>Do you think that i should use this method to disable and enable connection between uploads to save the batterylife or is not helpfull?</p> </blockquote> <p>Only if the only person who will ever run the application is you, you are running an Android 2.2 device (or older), and you don't mind messing up your phone.</p> <p>The code you link to is pathetic -- it might break on some devices and might break in the future, since it is bypassing the SDK. Moreover, if it is not your phone, I am not quite certain why you think you have the right to foul up other people's devices. And, to top it off, you can no longer hold the permission necessary to use that hack, as of Android 2.3.</p>
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    1. POMobile Data connection is a battery killer if there is no data transfering?
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    1. USCommonsWare
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    1. POMobile Data connection is a battery killer if there is no data transfering?
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    1. COThanx i have edited the question! Due to the new info: do you think that disable data connection between two upload may be save more battery? (sure that there is no dfference between GSM and GPRS? when the phone have Mobile data disable manually there isn't icon bar, but when you enable mobile data i get gprs icon onn status bar..)
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      1. USLork
    2. CO@Lork: "do you think that disable data connection between two upload may be save more battery?" -- possibly, but it will make your actual I/O more complicated. The connection is unlikely to be re-established instantaenously, so you would have to wait to try to do the upload until after the connection is established, while also making sure Android will not terminate your process in the meantime. This feels to me like premature optimization, if your sole bit of testing is looking at an icon in the status bar.
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    3. COThere is a difference between "re-establish the connection" and set "mobile data off". In fact the first is when you put down the entire connection (example airplane mode) but the second is equivalent to the manual operation (settings->wireless and ...->mobile net->active/disactive mobile data) and is instantaenously operation. This can be view also in logcat...and take less than 1 second. Anyway now my phone has somtings wrong because in the pas if i put it no sllep mode after a whole he automatically deactivate the mobile data...today it doesn't.
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