My Samsung Galaxy Tab Pro 10 (SM-T520) will discharge when connected. While the battery icon shows that it's charging, the tablet will still discharge, albeit more slowly than when not connected. This happens even under "low" use. For example, I'll have the screen brightness set to ~15% and just be browsing websites (simple forum posts trying to resolve this issue). The tablet is connected using the stock Samsung wall charger and cable that came with it, and I'll still lose a percentage point every few minutes.
Things I've tried:
- Different chargers
- Different cables
- Different battery (yes, this happens with a brand new battery installed by a Samsung representative)
I took it to a certified Samsung repair point to have it checked out and they ended up changing the battery. Presumably, they ran some sort of test to decide it was the battery's fault so, for the moment, I am assuming there is no other hardware problem.
I am using CyanogenMod 11 (11-20150105-NIGHTLY-picassowifi). Reading up on the problem, I found forum posts (for example, here) that suggest that some apps and/or widgets could cause this type of behavior.
Sadly, they don't mention which ones and I'd really like to avoid uninstalling everything just to try. Another suggestion was to reset to the default ROM but ditto, I see that as a last resort unless someone can confirm that that will solve the issue. This didn't used to happen when the tablet was newer (I've had it since mid-December 2014, so less than a year) and using the same ROM, which would suggest that it might indeed be the fault of some app or another.
The full list of installed apps as reported by adb shell 'pm list packages -f':
/data/app/adarshurs.android.vlcmobileremote-1.apk=adarshurs.android.vlcmobileremote
/data/app/au.com.pickup.pmm-1.apk=au.com.pickup.pmm
/data/app/bbc.mobile.news.ww-1.apk=bbc.mobile.news.ww
/data/app/berserker.android.apps.sshdroid-2.apk=berserker.android.apps.sshdroid
/data/app/ccc71.bmw-1.apk=ccc71.bmw
/data/app/ch.bitspin.timely-2.apk=ch.bitspin.timely
/data/app/com.abmantis.galaxychargingcurrent.free-1.apk=com.abmantis.galaxychargingcurrent.free
/data/app/com.accuweather.android-2.apk=com.accuweather.android
/data/app/com.ADnet-1.apk=com.ADnet
/data/app/com.adobe.flashplayer-1.apk=com.adobe.flashplayer
/data/app/com.amazon.kindle-1.apk=com.amazon.kindle
/data/app/com.anddoes.launcher-2.apk=com.anddoes.launcher
/data/app/com.anddoes.launcher.pro-1.apk=com.anddoes.launcher.pro
/data/app/com.anddoes.notifier-1.apk=com.anddoes.notifier
/data/app/com.android.vending-2.apk=com.android.vending
/data/app/com.apex.minimal-1.apk=com.apex.minimal
/data/app/com.AppDVision.Simata-1.apk=com.AppDVision.Simata
/data/app/com.appiator.defaultappmanager-1.apk=com.appiator.defaultappmanager
/data/app/com.avast.android.mobilesecurity-1.apk=com.avast.android.mobilesecurity
/data/app/com.bammsoft.scorekeeper-1.apk=com.bammsoft.scorekeeper
/data/app/com.bravolang.dictionary.greek-2.apk=com.bravolang.dictionary.greek
/data/app/com.bubblesoft.android.bubbleupnp-2.apk=com.bubblesoft.android.bubbleupnp
/data/app/com.ccpcreations.android.appdialer-1.apk=com.ccpcreations.android.appdialer
/data/app/com.chessrepertoire.garlami-1.apk=com.chessrepertoire.garlami
/data/app/com.cloudmosa.puffinFree-2.apk=com.cloudmosa.puffinFree
/data/app/com.devexpert.weather-1.apk=com.devexpert.weather
/data/app/com.dropbox.android-2.apk=com.dropbox.android
/data/app/com.elpais.elpais-1.apk=com.elpais.elpais
/data/app/com.epicdevskofasoft.colonize-1.apk=com.epicdevskofasoft.colonize
/data/app/com.estrongs.android.pop-1.apk=com.estrongs.android.pop
/data/app/com.farproc.wifi.analyzer-1.apk=com.farproc.wifi.analyzer
/data/app/com.Fraom.Gel-2.apk=com.Fraom.Gel
/data/app/com.gekkosteam.holotorch-1.apk=com.gekkosteam.holotorch
/data/app/com.gombosdev.ampere-1.apk=com.gombosdev.ampere
/data/app/com.google.android.apps.books-1.apk=com.google.android.apps.books
/data/app/com.google.android.apps.docs.editors.docs-1.apk=com.google.android.apps.docs.editors.docs
/data/app/com.google.android.apps.genie.geniewidget-1.apk=com.google.android.apps.genie.geniewidget
/data/app/com.google.android.apps.magazines-1.apk=com.google.android.apps.magazines
/data/app/com.google.android.apps.maps-1.apk=com.google.android.apps.maps
/data/app/com.google.android.apps.plus-1.apk=com.google.android.apps.plus
/data/app/com.google.android.calendar-2.apk=com.google.android.calendar
/data/app/com.google.android.gm-1.apk=com.google.android.gm
/data/app/com.google.android.gms-1.apk=com.google.android.gms
/data/app/com.google.android.googlequicksearchbox-2.apk=com.google.android.googlequicksearchbox
/data/app/com.google.android.marvin.talkback-1.apk=com.google.android.marvin.talkback
/data/app/com.google.android.music-1.apk=com.google.android.music
/data/app/com.google.android.play.games-1.apk=com.google.android.play.games
/data/app/com.google.android.talk-2.apk=com.google.android.talk
/data/app/com.google.android.tts-2.apk=com.google.android.tts
/data/app/com.google.android.videos-1.apk=com.google.android.videos
/data/app/com.google.android.youtube-1.apk=com.google.android.youtube
/data/app/com.google.earth-2.apk=com.google.earth
/data/app/com.grooky.reader-1.apk=com.grooky.reader
/data/app/com.guardian-1.apk=com.guardian
/data/app/com.handmark.expressweather-2.apk=com.handmark.expressweather
/data/app/com.hobbyistsoftware.android.vlcremote_usfree-1.apk=com.hobbyistsoftware.android.vlcremote_usfree
/data/app/com.hungrybolo.remotemouseandroid-2.apk=com.hungrybolo.remotemouseandroid
/data/app/com.imdb.mobile-2.apk=com.imdb.mobile
/data/app/com.josegd.monthcalwidget-2.apk=com.josegd.monthcalwidget
/data/app/com.jrtstudio.AnotherMusicPlayer-2.apk=com.jrtstudio.AnotherMusicPlayer
/data/app/com.keramidas.TitaniumBackup-1.apk=com.keramidas.TitaniumBackup
/data/app/com.kineticgamestudios.airtunes.android-2.apk=com.kineticgamestudios.airtunes.android
/data/app/com.levelup.touiteur-2.apk=com.levelup.touiteur
/data/app/com.mediocre.smashhit-2.apk=com.mediocre.smashhit
/data/app/com.merriamwebster-2.apk=com.merriamwebster
/data/app/com.MeteoGr-1.apk=com.MeteoGr
/data/app/com.microsoft.office.word-1.apk=com.microsoft.office.word
/data/app/com.mobilityflow.tvp-1.apk=com.mobilityflow.tvp
/data/app/com.mobisystems.msdict.embedded.wireless.oxford.dictionaryofenglish-1.apk=com.mobisystems.msdict.embedded.wireless.oxford.dictionaryofenglish
/data/app/com.mxtech.videoplayer.ad-1.apk=com.mxtech.videoplayer.ad
/data/app/com.n7mobile.nplayer-2.apk=com.n7mobile.nplayer
/data/app/com.nerdyoctopus.gamedots-2.apk=com.nerdyoctopus.gamedots
/data/app/com.nexonm.dominations.adk-1.apk=com.nexonm.dominations.adk
/data/app/com.oasisfeng.greenify-2.apk=com.oasisfeng.greenify
/data/app/com.o_taiji.digitimer7-1.apk=com.o_taiji.digitimer7
/data/app/com.oup.gab.odquicksearch-1.apk=com.oup.gab.odquicksearch
/data/app/com.overlook.android.fing-1.apk=com.overlook.android.fing
/data/app/com.quizdom-2.apk=com.quizdom
/data/app/com.ray.puntada.icons.free-1.apk=com.ray.puntada.icons.free
/data/app/com.ray.shadow.free-2.apk=com.ray.shadow.free
/data/app/com.rdr.widgets.core-1.apk=com.rdr.widgets.core
/data/app/com.roymam.android.notificationswidget-2.apk=com.roymam.android.notificationswidget
/data/app/com.sedevelop.dict.esgreekfl.free-1.apk=com.sedevelop.dict.esgreekfl.free
/data/app/com.SimpleMoonPhaseWidget-1.apk=com.SimpleMoonPhaseWidget
/data/app/com.skype.raider-2.apk=com.skype.raider
/data/app/com.socialnmobile.dictapps.notepad.color.note-2.apk=com.socialnmobile.dictapps.notepad.color.note
/data/app/com.softwarebakery.drivedroid-1.apk=com.softwarebakery.drivedroid
/data/app/com.sonelli.juicessh-1.apk=com.sonelli.juicessh
/data/app/com.spotify.music-1.apk=com.spotify.music
/data/app/com.stackexchange.marvin-2.apk=com.stackexchange.marvin
/data/app/com.supercell.clashofclans-2.apk=com.supercell.clashofclans
/data/app/com.symbolic.pitchlab-2.apk=com.symbolic.pitchlab
/data/app/com.teslacoilsw.launcher-2.apk=com.teslacoilsw.launcher
/data/app/com.thecvsi.endgame-1.apk=com.thecvsi.endgame
/data/app/com.thecvsi.tactictrainer-1.apk=com.thecvsi.tactictrainer
/data/app/com.tommedley.chatsey-1.apk=com.tommedley.chatsey
/data/app/com.touchfoo.swordigo-1.apk=com.touchfoo.swordigo
/data/app/com.touchtype.swiftkey-1.apk=com.touchtype.swiftkey
/data/app/com.uc.browser.hd-1.apk=com.uc.browser.hd
/data/app/com.utorrent.client-2.apk=com.utorrent.client
/data/app/com.viber.voip-1.apk=com.viber.voip
/data/app/com.wentam.divider-2.apk=com.wentam.divider
/data/app/com.wisteria.stone.dog-2.apk=com.wisteria.stone.dog
/data/app/com.yahoo.mobile.client.android.weather-2.apk=com.yahoo.mobile.client.android.weather
/data/app/de.hinterhofapps.sliderwidget-1.apk=de.hinterhofapps.sliderwidget
/data/app/de.kroegerama.android4batpercent-1.apk=de.kroegerama.android4batpercent
/data/app/de.robv.android.xposed.installer-1.apk=de.robv.android.xposed.installer
/data/app/es.grupoplaneta.diccionario.RAE-1.apk=es.grupoplaneta.diccionario.RAE
/data/app/flipboard.app-1.apk=flipboard.app
/data/app/ginlemon.flowerpro-2.apk=ginlemon.flowerpro
/data/app/gr.androiddev.taxibeat-2.apk=gr.androiddev.taxibeat
/data/app/gr.cosmical.android.AthensBook-2.apk=gr.cosmical.android.AthensBook
/data/app/gr.digitalblast.drivesafe-2.apk=gr.digitalblast.drivesafe
/data/app/gr.exodus.naftemporiki-1.apk=gr.exodus.naftemporiki
/data/app/jackpal.androidterm-1.apk=jackpal.androidterm
/data/app/jwtc.android.chess-1.apk=jwtc.android.chess
/data/app/net.intrinsicdroid.wikitab-1.apk=net.intrinsicdroid.wikitab
/data/app/net.nurik.roman.dashclock-2.apk=net.nurik.roman.dashclock
/data/app/org.cwf.tvxs-1.apk=org.cwf.tvxs
/data/app/org.ips.ests.chessopener-1.apk=org.ips.ests.chessopener
/data/app/org.pocketworkstation.pckeyboard-1.apk=org.pocketworkstation.pckeyboard
/data/app/org.telegram.messenger-2.apk=org.telegram.messenger
/data/app/org.videolan.vlc.betav7neon-1.apk=org.videolan.vlc.betav7neon
/data/app/org.wikipedia-1.apk=org.wikipedia
/data/app/org.wikipedia.beta-1.apk=org.wikipedia.beta
/data/app/org.wiktionary-1.apk=org.wiktionary
/data/app/org.zooper.zwfree-2.apk=org.zooper.zwfree
/data/app/org.zwanoo.android.speedtest-2.apk=org.zwanoo.android.speedtest
/data/app/pl.org.zielinscy.freeciv-1.apk=pl.org.zielinscy.freeciv
/data/app/se.maginteractive.rumble-2.apk=se.maginteractive.rumble
/data/app/stericson.busybox-1.apk=stericson.busybox
/data/app/tv.airwire-1.apk=tv.airwire
/data/app/uk.co.aifactory.backgammonfree-2.apk=uk.co.aifactory.backgammonfree
/data/app/uk.co.aifactory.chessfree-2.apk=uk.co.aifactory.chessfree
/system/app/Apollo.apk=com.andrew.apollo
/system/app/BasicDreams.apk=com.android.dreams.basic
/system/app/Bluetooth.apk=com.android.bluetooth
/system/app/BluetoothExt.apk=org.codeaurora.bluetooth
/system/app/Browser.apk=com.android.browser
/system/app/Calculator.apk=com.android.calculator2
/system/app/Calendar.apk=com.android.calendar
/system/app/Camera2.apk=com.android.camera2
/system/app/CertInstaller.apk=com.android.certinstaller
/system/app/CMBugReport.apk=org.cyanogenmod.bugreport
/system/app/CMFileManager.apk=com.cyanogenmod.filemanager
/system/app/CMHome.apk=org.cyanogenmod.launcher.home
/system/app/CMWallpapers.apk=com.cyanogenmod.wallpapers
/system/app/DeskClock.apk=com.android.deskclock
/system/app/Development.apk=com.android.development
/system/app/DocumentsUI.apk=com.android.documentsui
/system/app/DownloadProviderUi.apk=com.android.providers.downloads.ui
/system/app/DSPManager.apk=com.bel.android.dspmanager
/system/app/Email.apk=com.android.email
/system/app/Exchange2.apk=com.android.exchange
/system/app/FaceLock.apk=com.android.facelock
/system/app/Galaxy4.apk=com.android.galaxy4
/system/app/Gallery2.apk=com.android.gallery3d
/system/app/GoogleCalendarSyncAdapter.apk=com.google.android.syncadapters.calendar
/system/app/GoogleContactsSyncAdapter.apk=com.google.android.syncadapters.contacts
/system/app/GoogleEars.apk=com.google.android.ears
/system/app/HoloSpiralWallpaper.apk=com.android.wallpaper.holospiral
/system/app/HTMLViewer.apk=com.android.htmlviewer
/system/app/KeyChain.apk=com.android.keychain
/system/app/LatinIME.apk=com.android.inputmethod.latin
/system/app/LiveWallpapers.apk=com.android.wallpaper
/system/app/LiveWallpapersPicker.apk=com.android.wallpaper.livepicker
/system/app/LockClock.apk=com.cyanogenmod.lockclock
/system/app/MagicSmokeWallpapers.apk=com.android.magicsmoke
/system/app/MediaUploader.apk=com.google.android.apps.uploader
/system/app/NoiseField.apk=com.android.noisefield
/system/app/PackageInstaller.apk=com.android.packageinstaller
/system/app/PacProcessor.apk=com.android.pacprocessor
/system/app/PhaseBeam.apk=com.android.phasebeam
/system/app/PhotoPhase.apk=org.cyanogenmod.wallpapers.photophase
/system/app/PhotoTable.apk=com.android.dreams.phototable
/system/app/PicoTts.apk=com.svox.pico
/system/app/PrintSpooler.apk=com.android.printspooler
/system/app/SoundRecorder.apk=com.android.soundrecorder
/system/app/Street.apk=com.google.android.street
/system/app/TelephonyProvider.apk=com.android.providers.telephony
/system/app/Torch.apk=net.cactii.flash2
/system/app/UserDictionaryProvider.apk=com.android.providers.userdictionary
/system/app/VideoEditor.apk=com.android.videoeditor
/system/app/VisualizationWallpapers.apk=com.android.musicvis
/system/app/VoicePlus.apk=org.cyanogenmod.voiceplus
/system/app/WAPPushManager.apk=com.android.smspush
/system/framework/framework-res.apk=android
/system/priv-app/AARSCService.apk=eu.airaudio.aarscservice
/system/priv-app/BackupRestoreConfirmation.apk=com.android.backupconfirm
/system/priv-app/CalendarProvider.apk=com.android.providers.calendar
/system/priv-app/CMAccount.apk=com.cyanogenmod.account
/system/priv-app/CMUpdater.apk=com.cyanogenmod.updater
/system/priv-app/ConfigUpdater.apk=com.google.android.configupdater
/system/priv-app/Contacts.apk=com.android.contacts
/system/priv-app/ContactsProvider.apk=com.android.providers.contacts
/system/priv-app/DefaultContainerService.apk=com.android.defcontainer
/system/priv-app/DownloadProvider.apk=com.android.providers.downloads
/system/priv-app/ExternalStorageProvider.apk=com.android.externalstorage
/system/priv-app/FusedLocation.apk=com.android.location.fused
/system/priv-app/GoogleBackupTransport.apk=com.google.android.backuptransport
/system/priv-app/GoogleFeedback.apk=com.google.android.feedback
/system/priv-app/GoogleLoginService.apk=com.google.android.gsf.login
/system/priv-app/GoogleOneTimeInitializer.apk=com.google.android.onetimeinitializer
/system/priv-app/GooglePartnerSetup.apk=com.google.android.partnersetup
/system/priv-app/GoogleServicesFramework.apk=com.google.android.gsf
/system/priv-app/InputDevices.apk=com.android.inputdevices
/system/priv-app/Keyguard.apk=com.android.keyguard
/system/priv-app/MediaProvider.apk=com.android.providers.media
/system/priv-app/OneTimeInitializer.apk=com.android.onetimeinitializer
/system/priv-app/ProxyHandler.apk=com.android.proxyhandler
/system/priv-app/RSCService.apk=com.kineticgamestudios.airtunes.android.rsc
/system/priv-app/Settings.apk=com.android.settings
/system/priv-app/SettingsProvider.apk=com.android.providers.settings
/system/priv-app/SetupWizard.apk=com.google.android.setupwizard
/system/priv-app/SharedStorageBackup.apk=com.android.sharedstoragebackup
/system/priv-app/Shell.apk=com.android.shell
/system/priv-app/SystemUI.apk=com.android.systemui
/system/priv-app/TeleService.apk=com.android.phone
/system/priv-app/ThemeChooser.apk=org.cyanogenmod.theme.chooser
/system/priv-app/ThemesProvider.apk=org.cyanogenmod.themes.provider
/system/priv-app/Trebuchet.apk=com.cyanogenmod.trebuchet
/system/priv-app/VpnDialogs.apk=com.android.vpndialogs
/system/priv-app/WallpaperCropper.apk=com.android.wallpapercropper
So, any suggestions?
- Is this particular version of CyanogenMod known to have such problems?
- Is it worth upgrading to 12 or a more recent version of 11?
- Are any apps known to cause such issues?
- Is there anything else I've missed that I could try?