Can't Use Visa or PayPal I have used OneSim for a couple of years. Since day one I have not been able to use my credit cards (RBC Visa and Mastercard in Canada) to buy credits on the Sim account or even buy credits in the 1Simfund. So I have been using Paypal to make payments on their system. However it appears that they are no longer allowing Paypal so it's adios to OneSim. I've never had such a frustrating experience trying to give money to a vendor. UPDATE. After this review OneSim sent me an email explaining that my account information must match exactly what is input on their order system. I have spent hours with my bank trying to correct this and nothing works. I have not had this issue with other vendors in over 30 years of using my Visa cards. Very disappointed.

Unreliable Service As a long time customer, OneSimCard has provided marginal service for many years. It is definitely not what a cell phone user needs. When their service stops working properly - - you report the problem to them, and they give you a run around at fixing it. All of a sudden, their service magically starts working saying it's not their problem. Users should not have to put up with this kind of response. Users need reliable service. Don't use OneSimCard, Ken

Poor Service Poor Service As much as I would like OneSim to work, the fact is that it is a failed operation. I am abroad and needed a number for my bank to contact me. I found OneSim and had to sign up for an annual subscription (already a telling indicator that I had to sign up for 12 months as a minimum). The service is unreliable and when I contacted customer representatives, they told me that they knew that there was an issue but were unable to provide any repair date. Overall, this feels like a scam.

One sim customer service is very good One sim customer service is very good, no need to wait, just dial from your mobile to customer care, and within one minute you will receive a callback. All problems were listened to very carefully and they were resolved instantly. last 7 years I have been using this service in various countries whenever I travel. No need for a local country number to dial someone.

Thanks to Gino for his excellent support! After several fruitless days of emails back and forth to different OneSim support folks to get my voice calls working, it was Gino who very patiently did extensive trouble shooting and discovered the solution - now I can call out and receive calls using the 1SIM Voip app. And he clearly explained how to use either the Internet or SIM data, and how to set up my Samsung to minimize background data costs from all the other apps. Being able to speak with him on my landline while he was troubleshooting was key.