Used it twice, it works
I used Yoho mobile in the U.K, Western Europe and in an Eastern European country that is under sanctions, which I was surprised and very glad that they offered it. So I bought two separate esims, one for the Western Europe which included the U.K. and the other one was for the single Eastern European country (data only). Set up was easy, just follow the instructions, give it about 15 minutes for the cell phone carrier to process everything. I recommend restarting your phone to "refresh" the connection. Both esims worked fine for me and the data speeds were more than enough for my needs, such as social media, messaging apps, e-mails, websites, streaming, etc. I was getting about 50-100mbps download speeds. Please understand that data speed varies due to network congestion, infrastructure in the area, environment, buildings, interference, etc. Yoho mobile is not a cell phone carrier, so by purchasing an esim from Yoho mobile, you are using a 3rd party service (Yoho) to lease cellular data service from a company in the country or countries you choose. I will definitely use them again because their price was very fair and it saved me time by avoiding a trip to a cell phone store, waiting in line, and buying the tourist esim cards. The set up process was very quick, but please make sure you READ THE INSTRUCTIONS carefully and download the app (not required, but very helpful).