Wiko devices are however definitely problematic in terms of non-standard background process optimizations and adjustments to the settings that need to be done to make apps work properly.

Turn off Eco.Mode and disable Optimized mode

  1. Go to Phone assist

  2. Tap on Power Saver

  3. Turn off Eco. Mode

  4. Tap on Optimized mode

  5. Disable Optimized mode and make sure your app is not optimized

Add app to background whitelist

  1. Go to Advanced settings

  2. Tap on White-list apps background

  3. Find your app in the list and enable it

Alternatively

Go to dialer and put the code *#*#86569726#*#* and uncheck Lowram Enable And Background enable.
Note: This needs to be done again after reboot.

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