My first time using an E-Sim so I was a bit nervous, but I had nothing to worry about. There are very clear instructions on Easysim's website how to instal and use one. It worked beautifully with fast response times and zero problems. Thanks to their instructions, I had everything ready in advance and simply activated my E-Sim as soon as I reached the USA. It was great to be able to use my phone for data and calls (NB calls via Whatsapp or Messenger, using data) wherever I went. I will definitely use them in the future and I'm happy to recommend them to others.