Holafly is great if you don't need to use your phone as a wi-fi hotspot. Or local Turkcell simcard if you do. But there are no local carriers providing unlimited mobile internet. In both cases speed will be approximately the same as shown in the video. Cable internet is faster for downloads, but upload speeds are generally terrible. P.S. My apologies for the delayed response.
Thank you for the comment. Yes, both iPhones and Android phones are supported. Please make sure your device is carrier-unlocked and supports eSIM technology. Here's a list of compatible devices (updated regularly): esim.holafly.com/how-to/esim-phones/
