If too many devices are in the same Wi-Fi channel, this can affect the speed of the transmission. At the Wi-Fi hotspot of the Samsung device, the channel can be selected automatically or manually.

Note: If Wi-Fi sharing is enabled, this function is not available.

Android 10 (One UI 2.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Connections
Step 3:  Tap on  Mobile Hotspot and Tethering
Step 4:  Tap on  Mobile Hotspot
Step 5:  Tap on  Band
Step 6:  Choose between  2.4 GHz  and  5 GHz
  1. Open the Settings
  2. Tap on Connections
  3. Tap on Mobile Hotspot and Tethering
  4. Tap on Mobile Hotspot
  5. Tap on Band
  6. Choose between 2.4 GHz and 5 GHz

Samsung Instructions
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