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Yes, all my videos, even those with 4K resolution, are recorded with a smartphone. I've tried several phones, even newer models... so far the best one is the Samsung Galaxy S8 2017.. At 1:18 there is a sound from another phone, I just have two more phones in my pocket that I use for calls. I only use the Samsung Galaxy S8 2017 for are record my videos.

@@tstechshaman I give you some advice. If you are going to start recording a video, make sure you have the call and notification volume (aside from the general mobile volume, obviously) on mute. Why do I tell you? I came across some videos that were recorded with a mobile phone, and in the middle of playback the volume of calls and/or notifications was also recorded. I even recorded a video myself and in the middle of the recording you hear the notification tone that I had at the time. Conclusion? If you put it in mute mode, and you receive notifications and/or calls, the sound of the calls and/or notifications will not be heard after recording and when playing the video.

@@El_Transportacoches_33 thank you very much for the advice, in the future I will do it exactly the way you say