Android 3 (“Honeycomb”)

OnePlus
unofficial

Notifications, background tasks, automatic synchronization or alarms do not work correctly for “Slack” on Android 3 (“Honeycomb”)?

  1. Open the “Settings” of your device.
  2. Choose “Battery”.
  3. Choose “Battery optimization”.
  4. In the drop-down list at the top, switch from “Not optimized” to “All apps”.
  5. Choose “Slack” from the list of apps.
  6. Switch to “Don’t optimize”.
  7. Tap on “Done”.
  8. Leave by pressing ⌂ (“Home”) at the bottom of your device.
  9. Open “Slack” on your device.
  10. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. Open the “Settings” of your device.
  2. Choose “Battery”.
  3. Choose “Battery optimization”.
  4. At the top right, tap on ☰ (three bars) to open the expanded menu.
  5. Tap on “Advanced optimization”.
  6. Next to “Advanced optimization” and “Sleep standby optimization”, make sure that the switches are turned off, i.e. with their knobs or handles at the left.
  7. Leave by pressing ⌂ (“Home”) at the bottom of your device.
  8. Open “Slack” on your device.
  9. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. Open the “Settings” of your device.
  2. Choose “Apps”.
  3. Choose “⚙” (“Gear”) at the top right.
  4. Choose “Special access”.
  5. Choose “Battery optimization”.
  6. In the drop-down list at the top, switch from “Not optimized” to “All apps”.
  7. Choose “Slack” from the list of apps.
  8. Switch to “Don’t optimize”.
  9. Tap on “Done”.
  10. Leave by pressing ⌂ (“Home”) at the bottom of your device.
  11. Open “Slack” on your device.
  12. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. Open the “Settings” of your device.
  2. Choose “Apps”.
  3. Choose “⚙” (“Gear”) at the top right.
  4. Choose “Special access”.
  5. Choose “Battery optimization”.
  6. At the top right, tap on ☰ (three bars) to open the expanded menu.
  7. Tap on “Advanced optimization”.
  8. Next to “Advanced optimization” and “Sleep standby optimization”, make sure that the switches are turned off, i.e. with their knobs or handles at the left.
  9. Leave by pressing ⌂ (“Home”) at the bottom of your device.
  10. Open “Slack” on your device.
  11. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. Open the “Settings” of your device.
  2. Choose “Battery”.
  3. At the top right, tap on ☰ (three bars) to open the expanded menu.
  4. Choose “Aggressive doze & app hibernation”.
  5. At the top, next to “Enable aggressive doze & app hibernation”, find the switch.
  6. If the switch is turned off, i.e. with its knob or handle at the left, there’s nothing left for you to do. Otherwise, proceed with the next step.
  7. If “Slack” is in the upper section called “Not optimized”, there’s nothing left for you to do. Otherwise, proceed with the next step.
  8. In the lower section called “Optimized”, find “Slack”.
  9. Next to “Slack”, make sure that the switch is turned on, i.e. with its knob or handle at the right.
  10. Leave by pressing ⌂ (“Home”) at the bottom of your device.
  11. Open “Slack” on your device.
  12. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. Open the “Settings” of your device.
  2. Choose “Battery”.
  3. At the top right, tap on ☰ (three bars) to open the expanded menu.
  4. Choose “High power usage apps”.
  5. Next to “Auto close high power usage apps”, make sure that the switch is turned off, i.e. with its knob or handle at the left.
  6. Leave by pressing ⌂ (“Home”) at the bottom of your device.
  7. Open “Slack” on your device.
  8. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. Open the “Settings” of your device.
  2. Further down, choose “Advanced”.
  3. Choose “Recent app management”.
  4. Switch to “Normal clear”.
  5. Leave by pressing ⌂ (“Home”) at the bottom of your device.
  6. Open “Slack” on your device.
  7. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. Open “Slack” on your device.
  2. Press ⌂ (“Home”) at the bottom of your device to go back to your home screen.
  3. Press ▭ (“Recents”) at the bottom of your device to open the overview of recently used apps.
  4. On the entry for “Slack”, tap on the lock icon at the top right.
  5. The lock icon should have turned into a closed lock icon now.
  6. Leave by pressing ⌂ (“Home”) at the bottom of your device.
  7. Open “Slack” on your device.
  8. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. Open the “Settings” of your device.
  2. Choose “Apps”.
  3. Choose “⚙” (“Gear”) at the top right.
  4. Choose “App auto-launch”.
  5. At the very top, make sure that the switch is turned off, i.e. with its knob or handle at the left.
  6. Find “Slack” in the list of apps.
  7. Next to “Slack”, make sure that the switch is turned on, i.e. with its knob or handle at the right.
  8. Leave by pressing ⌂ (“Home”) at the bottom of your device.
  9. Open “Slack” on your device.
  10. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. Open the “Settings” of your device.
  2. Choose “Data usage”.
  3. At the top right, tap on ☰ (three bars) to open the expanded menu.
  4. Next to “Restrict background data”, make sure that the checkmark is removed from the checkbox.
  5. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. There are many apps on the app store which claim to boost performance, free up space, save battery, or optimize the RAM of your device. However, these apps interfere with other apps, like “Slack”, and prevent them from working correctly.
  2. If you have any app like “Clean Master”, “Security Master”, “Task Manager”, “Phone Cleaner”, “Super Cleaner”, “Power Clean”, “DU Cleaner”, “DU Speed Booster”, “CCleaner”, “AVG Cleaner”, “Avast Cleanup” or “Norton Clean”, check that it doesn’t block or terminate “Slack”.
  3. If unsure, consider uninstalling the app claiming to “clean” or “boost” your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?

  1. If you’ve made any changes based on the advice above and you’ve adjusted the settings of your device, proceed with the next step. Otherwise, there’s nothing left for you to do.
  2. Restart your device once. You can either choose the “Restart” option directly, if available, or turn off your device, wait a few seconds, and then turn it on again manually.
  3. Open “Slack” once on your device – by tapping on “Slack” on your home screen or in the list of all apps.
  4. Leave by pressing ⌂ (“Home”) at the bottom of your device.

Have you been able to follow these steps on Android 3 (“Honeycomb”)?