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I have had one of my worst customer experience with them. Either their sales representatives are totally uninformed or they are totally misleading. I purchased an ATT plan for the US. However, when I got there I found out that I could only connect to T-Mobile 2G network. 3G and 4G don't work at all! When I contacted their customer service I was told that I have been given a sim that supports only T-Mobile. I asked them about why was I given a T-Mobile sim but got no replies. Another representative simply told me "your phone doesn't support 3G or 4G on ATT". I told him that I had specifically asked if 3G would work on my phone on ATT (As I already know that ATT doesn't support 4G on OnePlus 3) and the sales rep. Had said that "Yes, 3G will definitely work". But customer support simply asked me to mail the sales rep who never replied to any of my emails. Now I'm stuck in a new country without any internet and with a loss of $25. My advice would be to stay away from these people!
Richard N.'s review of WorldSIM earned 2 Very Helpful votes
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Hello Anmol,
We humbly apologize for the inconvenience you have faced during your international travels.
We appreciate for bringing this issue to our attention. We have contacted the concerned sales representative and we will revert asap.
We are grateful for your patience on the same,
WorldSIM Support