I am replacing my phone next week and realised that one of my favourite videos exists only as a public TikTok post. It shows the first miniature room I built, including a few details I have since changed. I want a local copy before moving everything to the new device, but I do not want to rush through the process and assume that a file has transferred correctly. Would you save it on the old phone first or use a computer? I have access to both, and my priority is keeping a complete copy that I can find easily after the move.