Downloading a video on the TikTok iOS app (Note: this only works if the creator marks the video as 'Public.' If it's listed as 'Private,' you won't see the save option.) The video is placed in your phone's camera roll, and you'll see options to share the video from there to SMS, Facebook, WhatsApp, or other services. Hold down a finger on the video, and in the menu that pops up, tap Save Video at the top. This is the easiest way to download a TikTok video, because you can instantly do it on your mobile device, right from within the TikTok app.