1. Rick_Moli0212's Avatar
    For almost 6 months now my Samung Galaxy S5 has been running Android Lollipop 5.1.1 on T-Mobile, and every day I deal with a peculiar problem. It seems that the longer I keep my phone on, the slower it gets.

    Every night I shut down my phone before going to bed, and every morning the problem seems to have reset. Early in the morning (after being off all night) my phone runs perfectly, with smooth animations and no issues with switching between and using multiple apps. Yet, as the day progresses, the phone begins to run more sluggishly. By the end of the night, using a single app like Snapchat with nothing else open in the background often causes freezing.

    I've thought this could be an issue with the install arrising from updating OTA from 4.4.2 to 5.0 to 5.1.1, and I would have factory reset by now, except I can't bring myself to put myself through the headache of backing up data, reseting the phone, restoring data, and setting up everything again just for the possiblity that the problem will go away. Is there anyone else who has experienced this same issue? Can anyone offer any advice? Would a factory reset be worth it?
    12-06-2015 01:26 PM
  2. B. Diddy's Avatar
    Have you already tried wiping the cache partition? It won't erase any personal data: http://support.t-mobile.com/docs/DOC-10404
    12-07-2015 05:49 PM
  3. Rick_Moli0212's Avatar
    Yes, multiple times, to no avail.
    12-07-2015 06:01 PM
  4. B. Diddy's Avatar
    SD card present? If so, try a different card, or try using the phone without the card. If the card is corrupt, it might contribute to performance issues.
    12-07-2015 09:02 PM
  5. Rick_Moli0212's Avatar
    There is an SD card present. I will take it out tonight and see if I notice any improvements tomorrow.
    12-07-2015 09:07 PM
  6. Rick_Moli0212's Avatar
    Taking the SD card out for a day had no noticeable improvement.
    12-09-2015 03:11 PM
  7. B. Diddy's Avatar
    Does this happen in Safe Mode? It could tell you if it's arising from a 3rd party app or a system app. https://support.t-mobile.com/docs/DOC-10696
    12-09-2015 03:49 PM
  8. Rick_Moli0212's Avatar
    The phone seems to be running much smoother in Safe mode, but isn't that more due to the fact that the device has a couple dozen fewer apps to run?
    12-10-2015 06:28 PM
  9. B. Diddy's Avatar
    You're correct that Safe Mode prevents any 3rd party app from functioning. But 3rd party apps shouldn't bog down the phone's performance if they're behaving correctly. If they're misbehaving and using too many resources, then the solution is to uninstall that app. It can be tedious to pinpoint the culprit, though. Sometimes you have to uninstall apps one by one.

    Do you have any "RAM booster" or antivirus apps installed? If so, I would uninstall them. Some antivirus apps can be resource hogs, while "RAM boosters" tend to be counterproductive in the long run.
    12-10-2015 09:19 PM
  10. Rick_Moli0212's Avatar
    When you say 3rd party apps, do you mean apps that aren't made by Google or Samsung?

    Also, no RAM boosters, and Lookout Security only. Both the usage info in the Application Settings & the process stats found in the Developer Options show that Lookout has a low memory usage.
    12-10-2015 09:38 PM
  11. B. Diddy's Avatar
    I believe Safe Mode will disable any app that wasn't preinstalled, so that includes system and preinstalled bloatware.

    Can you disable Lookout? It's worth trying for a day.
    12-11-2015 01:36 AM
  12. imaginethat0811's Avatar
    I am having the same issues and i just restarted my phone in Safe Mode and it seems to be helping, but now I can't open my Facebook app. All of my other apps work just not FB. Is it possible that the Facebook app isn't compatible with the new lollipop? Is there anyway to remove the Lollipop and roll back to a previous Android version?
    12-11-2015 12:00 PM
  13. B. Diddy's Avatar
    I am having the same issues and i just restarted my phone in Safe Mode and it seems to be helping, but now I can't open my Facebook app. All of my other apps work just not FB. Is it possible that the Facebook app isn't compatible with the new lollipop? Is there anyway to remove the Lollipop and roll back to a previous Android version?
    Welcome to Android Central! Safe Mode is supposed to prevent all 3rd party apps from working (although some phones allow you to turn on individual apps during Safe Mode--is that the case with yours?).
    12-11-2015 12:57 PM
  14. imaginethat0811's Avatar
    Yes. It seems as if all of my apps from banking, to Instagram, ESPN, NBA, etc still work. Facebook will open then immediately close. I have taken it out of safe mode now but this update has been a nightmare. 5.0 wasn't bad but when 5.1.1 came out my phone has not been the same since.
    12-11-2015 01:19 PM
  15. B. Diddy's Avatar
    That doesn't seem right. Is there any indication that confirms the phone is in Safe Mode?
    12-11-2015 02:53 PM
  16. imaginethat0811's Avatar
    Yes, It vibrates just before loading and has the Safe Mode in the bottom left corner
    12-11-2015 03:37 PM
  17. B. Diddy's Avatar
    Hmm. And Facebook is fully up to date? I'm currently on 57.0.0.18.136.
    12-11-2015 03:43 PM
  18. Rick_Moli0212's Avatar
    Disabling Lookout didn't seem to have any long-term effects. I'm now thinking Snapchat might be a cause of my phone slowing down, as it is the most prone to lag, freeze, and crash out of all of my apps. I'm going to uninstall it for a day to see if that helps.
    12-12-2015 05:00 PM
  19. Rick_Moli0212's Avatar
    No change in behavior. It's frustrating that a high-end phone less than 2 years old on the latest available software is giving me lag like this.
    12-14-2015 02:56 PM
  20. B. Diddy's Avatar
    Ok, how about reinstalling the firmware using Smart Switch? I think (but am not sure) that reinstalling the current firmware via Smart Switch won't wipe the phone.
    12-15-2015 12:30 AM
  21. Rick_Moli0212's Avatar
    I can't find anything that explicitly states that it will wipe everything, but it looks to imply that it is in fact a factory reset. I'd like to save a factory reset as a last resort in hoping to fix this issue, unless someone specifically recommends it.
    12-15-2015 09:20 AM
  22. Rick_Moli0212's Avatar
    I know Android 5.1.1 was supposed to have patched the RAM leaks present in 5.0, but is it possible that my phone didn't patch properly?
    12-18-2015 02:03 PM
  23. missreese's Avatar
    I am having the same concern as well.
    12-20-2015 07:53 AM

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