1. Android Central Question's Avatar
    Details: Lenovo K5 Pro, Global ROM (in EU), Android 8.1.
    I have a problem with data connection, when screen is locked or recently unlocked, data connection sometimes isn't working, even though the connection shows as working.
    In Chrome I get errors like: err_connection_closed, err_ssl_version_interference, dns_probe_finished_no_internet.
    The weird thing is, when I have turned on hotspot and use internet on my laptop, it never loses connection for the whole evening.
    All apps have 'unrestricted data access' and 'background data' enabled.
    06-04-2019 04:17 AM
  2. methodman89's Avatar
    Check your battery saver configuration.
    06-04-2019 07:06 AM
  3. k5pro's Avatar
    'Battery saver' is off and 'Turn on automatically' is at 5% battery.
    06-04-2019 07:21 AM
  4. methodman89's Avatar
    Isolate weather it's an app or system glitch by placing the phone in Safe Mode.
    06-04-2019 07:36 AM
  5. k5pro's Avatar
    Isolate weather it's an app or system glitch by placing the phone in Safe Mode.
    I tried every method I could find to enter Safe Mode, but I couldn't get Safe Mode on.
    06-12-2019 07:43 AM
  6. methodman89's Avatar
    Try this


    Start with the phone Off.

    Press and hold to On.

    When "Lenovo "logo is displayed, release the key On.

    Immediately after releasing the Power key, hold the key Volume down .

    Release the key Volume down when you see Safe Mode appear in the lower left corner of the screen.
    06-12-2019 07:49 AM
  7. k5pro's Avatar
    Try this


    Start with the phone Off.

    Press and hold to On.

    When "Lenovo "logo is displayed, release the key On.

    Immediately after releasing the Power key, hold the key Volume down .

    Release the key Volume down when you see Safe Mode appear in the lower left corner of the screen.
    This is one of the methods I tried multiple times. Just tried it again, didn't work.
    06-12-2019 07:59 AM
  8. belodion's Avatar
    Can you try the SIM in another phone, or another SIM in your phone?
    06-12-2019 08:04 AM
  9. k5pro's Avatar
    Can you try the SIM in another phone, or another SIM in your phone?
    Yes, I could try that, probably on the weekend.
    belodion likes this.
    06-12-2019 08:14 AM

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