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    [HowTo] Alternate way of saving battery when using 4G/LTE

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    • c4pp4
      c4pp4 @Yoni last edited by

      @yoni I did that when it was idle.

      Y 1 Reply Last reply Reply Quote 0
      • Y
        Yoni @c4pp4 last edited by Yoni

        @c4pp4
        Are you able to do some testing for at least 12 hours from a full battery to see the differences please?
        And are you able to get the dBm numbers for 2G and 4G if possible please?
        Are you using an email/IM (Dekko, Teleports..) client that works in the background?
        I'm really preplexed that your'e not getting any improvements in battery life. this method had worked with many phones that I tested including iPhones using 4G.

        c4pp4 1 Reply Last reply Reply Quote 0
        • D
          domubpkm last edited by

          This script is useful indeed, but it currently has its limits : don't forget to stop it (STOP script name) when cellular data must remain activated in continuous screen off : RADIO app, OTA update, download.... And then restart it (START script name) when you want to use it again.

          Maybe the script can be improved ?

          1 Reply Last reply Reply Quote 0
          • c4pp4
            c4pp4 @Yoni last edited by c4pp4

            @yoni Maybe it was something to do with TELEports or RC image because now it's without problem and before the latest test I updated both.
            I think it's some kind of bug because I forgot to turn off script and that's why it was saving battery. In my case when 4G is set and turned off cellular data - it's not saving battery. When 2G is set and turned off cellular data - it's saving battery. I think it shouldn't matter what is set. 🤔

            @domubpkm I'm not going to do that. Use the first or second script if you need connection.

            Y 1 Reply Last reply Reply Quote 0
            • Y
              Yoni @c4pp4 last edited by

              @c4pp4
              That is very strange, turning off cellular data should save battery by reducing the amount of outgoing radio transmitions, therefore what you are describing is contrary to all of the tests I had made on every OS, are you able to check that cellular data is actually turned off in 4G?

              ? c4pp4 2 Replies Last reply Reply Quote 0
              • ?
                A Former User @Yoni last edited by

                This seems to be a fine thing . Could one also execute VoLte with this script, of which I have no idea? The creation should not be a problem I think. But I'd better be careful before UT crashes again.

                1 Reply Last reply Reply Quote 0
                • c4pp4
                  c4pp4 @Yoni last edited by

                  @yoni Yes, there is no connection in Morph.

                  Y 1 Reply Last reply Reply Quote 0
                  • Y
                    Yoni @c4pp4 last edited by

                    @c4pp4
                    It just doesn't make sense. Could there be a script that turns it back on when you lock the phone?

                    c4pp4 1 Reply Last reply Reply Quote 0
                    • c4pp4
                      c4pp4 @Yoni last edited by

                      @yoni I'm not expert but I can imagine ubuntu system don't turn off cellular data on android side, so there is no connection within ubuntu, but there is connection in android layer.

                      D Y 2 Replies Last reply Reply Quote 0
                      • D
                        domubpkm @c4pp4 last edited by

                        @c4pp4 I'm not an expert too but maybe a total reflash (wipe option) of the smartphone and a reinstallation on a totally clean base would help so as to confirm or not your problem. In any case, in my case I had to do this several times and it solved some instabilities.

                        1 Reply Last reply Reply Quote 0
                        • Y
                          Yoni @c4pp4 last edited by

                          @c4pp4
                          It definitely turns the data connection off, and it is visible when I checked it with a RF meter.
                          Data on (4G):
                          UT 4G Data On.JPG
                          Data off (4G):
                          UT 4G Data Off.JPG
                          And it is the reduced transmitions that saves the battery, so your situation does not make sense.

                          AppLee 1 Reply Last reply Reply Quote 0
                          • AppLee
                            AppLee @Yoni last edited by

                            @yoni
                            Without the full picture it's hard to judge what makes sense or not.
                            The radio is not the only power consumer.
                            Depending on the device and the firmware used the behavior can differ.

                            Maybe a process is looping to find the modem and prevent the CPU to sleep.
                            Maybe also c4pp4's theory is right ; if on Ubuntu Touch's side we kill the data it doesn't kill the modem because you need calls and SMS.
                            So depending on vendor's firmware and specific port implementation experience may vary.
                            In a port I suppose that turning off the data can be implemented in several different ways with slightly different behaviors.

                            Y 1 Reply Last reply Reply Quote 0
                            • Y
                              Yoni @AppLee last edited by

                              @applee
                              Those graphs represent RF activity with and without the data connection, so calls and texts are still available in both scenarios, and on the mi A2 the battery lasted 4 times longer when just the data is turned off, and this principle is the same on Androids and iPhones, but at different battery savings levels.
                              There might be something that is causing the cpu to constantly work, thus preventing battery savings, but UT definitely has control over the data connectivity, and it does turn it off.

                              AppLee 1 Reply Last reply Reply Quote 0
                              • AppLee
                                AppLee @Yoni last edited by

                                @yoni
                                What I meant is unless you can produce the same graph with C4pp4's device you cannot draw any conclusion on what happens.
                                If it's the same model it would be really strange.
                                But with another device it's a whole different story.
                                No data received by the user (Morph or Teleports for example) does not mean the modem is not working way more than expected.

                                Y 1 Reply Last reply Reply Quote 0
                                • Y
                                  Yoni @AppLee last edited by Yoni

                                  @applee
                                  Both myself and @c4pp4 are using the same device, and @domubpkm also had battery savings using a Volla, there is something starnge happening with c4ppa's phone, and I'm really trying to understand why he is not getting any savings on 4G.

                                  1 Reply Last reply Reply Quote 0
                                  • D
                                    domubpkm last edited by

                                    Redownload mms mecanism works fine on Volla RC 43 : for this feature, thanks to @jezek and @lduboeuf as it is a very usefull nechanism to save battery too !

                                    1 Reply Last reply Reply Quote 0
                                    • Bolly
                                      Bolly last edited by

                                      Hello @c4pp4,

                                      Thank you for the scripts. ♥
                                      I found out that if the device doesn't have 4G you have to put "umts" in "primary_preference". (My device is e4.5 - Krillin - )

                                      primary_preference="umts"

                                      I've taken the liberty of sharing your scripts on my blog to reach more people, I hope you don't mind.

                                      https://elcondonrotodegnu.wordpress.com/2022/04/25/scripts-para-ahorrar-bateria-en-ubuntu-touch/

                                      Thanks again. 🙂

                                      2015-Now (Daily use) : BQ Aquaris E4.5 Ubuntu edition
                                      2016-Now (Daily use) : BQ Aquaris M10 FHD Betatester

                                      2020-Now : PinePhone Braveheart & CE UBports
                                      2020-Now (Family/Daily use): Vollaphone
                                      2022-Now (Family): Vollaphone 22

                                      1 Reply Last reply Reply Quote 1
                                      • P
                                        prog-amateur @Yoni last edited by

                                        Hello @c4pp4 thank you VE-RY much for your script. Please, could you edit your 1st post just to inform about the following ?

                                        -> Final step : Reboot the phone

                                        Reason : I have done the script II and I could not come back to 4G (2G was OK), so I have used the "lte" modification in the script without success. Then I have reboot my phone and the script was working perfectly.

                                        @yoni said in [HowTo] Alternate way of saving battery when using 4G/LTE:

                                        Here are the battery tests, starting with 4G with data on:
                                        badtest.JPG
                                        2G with data on:
                                        2gbatest.JPG

                                        When I see you plots without / with script, it is a day and night ! My Nexus 5 has a battery drain (or the battery is not enough powerful), I just installed the script so I lack of time to feedback but I hope results like yours, it would be wonderful.

                                        Again, thank you very much for your kind help, such a topic shall be pinned I think.

                                        c4pp4 1 Reply Last reply Reply Quote 0
                                        • c4pp4
                                          c4pp4 @prog-amateur last edited by

                                          @prog-amateur said in [HowTo] Alternate way of saving battery when using 4G/LTE:

                                          I have used the "lte" modification in the script without success. Then I have reboot my phone and the script was working perfectly.

                                          Thank you for the report, you have to use "restart lte-battery-saver" to apply script changes. I will add a note about it. It looks like "lte" is more generic then "any" so I'll change the script.

                                          1 Reply Last reply Reply Quote 1
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                                          • Referenced by  D domubpkm 
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