So I just had the same issue with my S9+. It is severely cracked and damaged and is an extra phone, but has been working for me for odds and ends. Then I hadn't used it in a while and I thought the phone was dead so I tried to charge and it wouldn't turn on and would have a low steady buzz that would turn into and long continuous buzz. I tried everything that this website suggested and it was all a miss until I tried this…
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So I just had the same issue with my S9+. It is severely cracked and damaged and is an extra phone, but has been working for me for odds and ends. Then I hadn't used it in a while and I thought the phone was dead so I tried to charge and it wouldn't turn on and would have a short steady buzz that would turn into and long continuous buzz. I tried everything that this website suggested and it was all a miss until I tried this…
While the phone is plugged in, wait til it turns into the long continuous buzz. Then press and hold the power, volume down, and Bixby button just below the volume down. A screen popped up that gave me a few option like power down, factory reset, restart, and one other option that I can't remember. I chose restart which was the first option. Then my phone went through the startup process. My phone is still dead so I'm not 100% sure yet if it was an absolute fix and won't know til its charged but so far so good!
So I just had the same issue with my S9+. It is severely cracked and damaged and is an extra phone, but has been working for me for odds and ends. Then I hadn't used it in a while and I thought the phone was dead so I tried to charge and it wouldn't turn on and would have a low steady buzz that would turn into and long continuous buzz. I tried everything that this website suggested and it was all a miss until I tried this…
While the phone is plugged in, wait til it turns into the long continuous buzz. Then press and hold the power, volume down, and Bixby button just below the volume down. A screen popped up that gave me a few option like power down, factory reset, restart, and one other option that I can't remember. I chose restart which was the first option. Then my phone went through the startup process. My phone is still dead so I'm not 100% sure yet if it was an absolute fix and won't know til its charged but so far so good!