How can I band lock the S8

jimmyjam22

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Jan 20, 2016
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I stream over cell occasional TV, sometimes the quality is good. Most of the time the quality is crap. I have narrowed it down to a specific band that is good.
I've tried the app "Samsung band selector" but it doesn't work on my S8. On A side note Samsung band selector works on family members S10 and S20.
What do I need to do to lock the band on my Galaxy S8?