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

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    • Keneda
      Keneda @domubpkm last edited by Keneda

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

      Does it mean that the main purpose of the work is that MMS could be received normally with cellular data OFF ?

      No the purpose is to not loose MMS in any cases and being able to download them when data is back on.
      You can't receive MMS without data on, no software tweak can change this.
      See there if not already done for full story : https://forums.ubports.com/topic/5100/the-mms-lost-story

      2015-Now : Meizu MX4 (Stable) for daily use
      Spare : Nexus 5 (Stable)

      1 Reply Last reply Reply Quote 3
      • D
        domubpkm last edited by domubpkm

        It's not a story, it's a ''bible'' (which I hadn't read) like the amount of work (and surely headaches) put in by @jezek .. Yes, the aim is, rather, to have a delayed download (or to be able to delay downloading the MMS) when the cellular data is reactivated which is great. In short, the idea is to ensure that the MMS is not lost. I think it's more exact.

        ....and this would be good as it would allow the cellular data to be turned off to save battery power and turned back on when needed to download the MMS. šŸ™‚

        1 Reply Last reply Reply Quote 1
        • Mario.CH
          Mario.CH @c4pp4 last edited by

          @c4pp4
          Hello c4pp4,
          so, my device has been running with this customization for almost a week now.
          Still, I can't say yet if it causes any improvement in battery life.
          But for sure I can confirm that it does not contribute to any degradation.
          Thank you again.

          Translated with www.DeepL.com/Translator (free version)

          šŸ“± Xperia X ;since 2020
          šŸŽ When you realize you are riding a dead horse, get off!
          My languages skill: šŸ‡ØšŸ‡­šŸ‡¦šŸ‡¹ šŸ‡©šŸ‡Ŗ, and only orally: šŸ‡¬šŸ‡§ šŸ‡¹šŸ‡­

          c4pp4 1 Reply Last reply Reply Quote 1
          • c4pp4
            c4pp4 @Mario.CH last edited by

            @mario-ch Maybe there is no such difference between G3 and G4 consumption.

            Keneda TotalRando 2 Replies Last reply Reply Quote 0
            • Keneda
              Keneda @c4pp4 last edited by

              @c4pp4
              I don't use the script but i can tell you that there is a big difference on my phone in battery consumption between 3G and 4G.

              2015-Now : Meizu MX4 (Stable) for daily use
              Spare : Nexus 5 (Stable)

              1 Reply Last reply Reply Quote 1
              • TotalRando
                TotalRando @c4pp4 last edited by TotalRando

                @c4pp4 Ok, so just to confirm (because I have already messed up Anbox and will probably have to reinstall anyway just for that), this script defaults to 3G/4G? So it won't go back to 2G? Because that's what I want. It annoys me to have to switch back to 3G/4G every time I turn my phone back on (2G is virtually unusable where I live but if the phone sleeps too long, it's back on 2G.) I only need the last script from before the "note for the further investigation" part? Just copy into a Seabass, save script and run in terminal?

                NOTE: I don't care about battery consumption-- my phone is plugged in a lot-- but I do like my calls crystal clear when I dial without having to be like "ugh, it's on 2G again". Also, I can't get MMS on 2G but on 3G/4G, works fine.


                Nerd with UT on a OnePlus One. OnePlus 6T waiting in the wings for VoLTE.

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

                  @totalrando use the walkthrough from the first post, just change variables to:

                  primary_preference="lte"
                  saving_preference="umts"
                  
                  1 Reply Last reply Reply Quote 2
                  • D
                    davedanger last edited by

                    Script works good running in the terminal but doesn't seem to work when put in upstart

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

                      @davedanger What version of UT? There is a regression when using 2G now.

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

                        @c4pp4 I'm using OS Ubuntu 16.04 (2021-09-02/2) on a Pixel 3a

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

                          @davedanger I think it's Halium 9 device therefore it can be affected by https://github.com/ubports/ubuntu-touch/issues/1816

                          Would you be more specific what you mean by "doesn't seem to work when put in upstart"?

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

                            @c4pp4 I mean to have the script run at startup through either nano or chrontab @reboot. When I try "start batterysaver" after reboot, it says it's already running. I think the issue is on my end, because I've also tried running a vpn-autoconnect with the same results. It works fine when I copy/paste into the terminal, but when I nano or chrontab @reboot, the vpn switch automatically moves to "on" every 5 secs as scheduled but immediately fails and turns off. So I'm pretty sure the battery saver script is doing the same thing, trying to work but can't quite execute. Hope this was helpful.

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

                              @davedanger The command "start batterysaver" starts upstart job after its created, after restart it starts automatically, you don't have to start it manually again - that's why "it's already running" message appears. If you see the "L" icon when the screen is unlocked and "2G" when locked, its working.

                              L.jpg

                              2G.jpg

                              D 1 Reply Last reply Reply Quote 1
                              • D
                                davedanger @c4pp4 last edited by

                                @c4pp4 I understand that, I only tried to manually start it after reboot because it didn't seem to be working, that's when it said it was already running. And if I copy/paste the script into the terminal it goes to 2g when locked and L when unlocked, no problem. It's just when I try to run it as a startup script, then it's running just not executing, and that's any script, not just this one, and I can't figure out why.

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

                                  @c4pp4
                                  Hello c4pp4
                                  I had made some battery tests to see how efficient your method is (I didn't actually use your script), and I had found that going down to 2G does increase battery life but that having the data connection turned off is actually more efficient, and I was wonderring if you are able to create a similar script that could enable/disable the data connection, preferebley without the need to actually unlock the phone, so that when the screen is turned on it will connect to the internet so that communications could come through?
                                  I would had made one myself but I have no idea how to.
                                  Here are the battery tests, starting with 4G with data on:
                                  badtest.JPG
                                  2G with data on:
                                  2gbatest.JPG
                                  And 4G with data turned off:
                                  batest.JPG
                                  You can see further details here: https://forums.ubports.com/topic/6971/wifi-mobile-data-on-off-according-to-screen-state/29

                                  c4pp4 P 2 Replies Last reply Reply Quote 1
                                  • c4pp4
                                    c4pp4 @Yoni last edited by c4pp4

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

                                    enable/disable the data connection

                                    Do you mean turn it off at all? No connection to receive a call? What is sim slot number in your case?

                                    without the need to actually unlock the phone

                                    I think that's no problem.

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

                                      @c4pp4
                                      I didn't mean flight mode, rather just to have the mobile data turned on and off accordingf to the screen state if possible, if not then according to the phone being locked/unlocked.
                                      That will be so amzing if you can create such a script!
                                      Sim slot 1 out of 2 (Xiaomi mi A2)

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

                                        @Yoni
                                        After all I didn't need to know the sim slot number. šŸ™‚
                                        Here is your script for testing:

                                        #!/bin/bash
                                        
                                        interface=com.canonical.Unity.Screen
                                        member=DisplayPowerStateChange
                                        
                                        dbus-monitor --system "type=signal,interface='${interface}',member='${member}'" |
                                        while read -r line; do
                                        	if [[ ${line} == *"int32 0" ]]; then
                                        		read
                                        		dbus-send --type=method_call --dest=com.ubuntu.connectivity1 /com/ubuntu/connectivity1/Private org.freedesktop.DBus.Properties.Set string:com.ubuntu.connectivity1.Private string:MobileDataEnabled variant:boolean:false
                                        	elif [[ ${line} == *"int32 1" ]]; then
                                        		read
                                        		dbus-send --type=method_call --dest=com.ubuntu.connectivity1 /com/ubuntu/connectivity1/Private org.freedesktop.DBus.Properties.Set string:com.ubuntu.connectivity1.Private string:MobileDataEnabled variant:boolean:true
                                        	fi
                                        done
                                        
                                        D Keneda 2 Replies Last reply Reply Quote 1
                                        • D
                                          domubpkm @c4pp4 last edited by

                                          @c4pp4 Hello. I tested your script : it works half for me (Volla OTA-20) ;

                                          1. Cellular data is not disabled when the screen locks (and turns off) AUTOMATICALLY after the inactivity time set in the system settings.

                                          2. The script works when you MANUALLY lock the phone by pressing the dedicated side switch.

                                          Tested and verified by sending an email to myself: case 1: email received black screen ; case 2: email received only when the screen is turned back on by pressing the side switch, which is normal šŸ™‚

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

                                            screenshot20211204_085533538.png

                                            I don't like to press the side switch unnecessarily (so as to save it) to turn off the screen. It make me think that, in my opinion, it lacks the option in the "system" drop down menu: "lock and turn off screen", there is only currently the "lock" option (there is a delay before the screen turns off
                                            ), or a small .click program, for example like Lock it : Screen off on android, which would be very useful if a developer is able to build that šŸ˜‰

                                            1 Reply Last reply Reply Quote 1
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