Home Internet 2.4 ghz Fix and Signal Strength

travelingcue

    Using the t-mobile home internet program, devices are having issues with and maintaining the 2.4ghz connections.  App says that the 2.4 and 5 Ghz are working.  Unfortunately, a Roku and tablet says they're unable to connect.  The Roku connected just yesterday    I've tried turning everything off and on and still can't connect.   This has been an ongoing issue.  The 5ghz devices work well.  Does anyone know how to resolve this?

     

    Also since I'm here...does anyone have an idea on how to improve coverage in the house? Will an extender or mesh help?  My gateway box is a bit further from one of the rooms and we'd like to up the signal strength if possible to that area.  At the box, the signal is "good" and I've tried various spots in the house looking for "excellent" signal strength but was not successful.

     

    Thank you for any help you can provide.

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