I used a clay international sim and my experience with their services was just horrible. I landed in Australia with a dysfunctional sim card. I tried whatsoever to get it started it just wouldn’t. I finally emailed because I had no access to my phone and I got a revert after a day on that email saying that they will look into this matter and I should not worry about it, that it was a minor glitch. My sim didn’t work for the first 7 days of my trip, even though I had paid rentals for it. The remaining days, the services were on and off. Poor data topped the charts. Despite paying so much for the plan what I got I return was really crappy. Never recommending this to anyone.