Saturday, November 7, 2026 · Customer reviews of US businesses
The Fair Hearing score
Average
68 reviews
OnesimSelect a line to read only those reviews.
Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Best prepaid eSIM data plans for travelers, digital nomads and remote workers
Onesim (onesim.co) has 68 customer reviews on The Fair Hearing, with an average rating of 3.0 out of 5.
68 approved reviews, newest moderated first
Poor customer service. Does not respond
By Edmund R.
Response from Onesim· Jan 23, 2023
Dear Edmund, We have completed a full refund on your 5GB bundle order. If you had problems with the 1GB bundle, let us know. Regards, Onesim Team
great product
By marojg
Response from Onesim· Jan 22, 2023
Dear Marek, Thank you for highly evaluating our product. I hope you will use it again. Regards, Onesim Team
It didn’t work. Tried many things, followed all instructions and got help from a phone shop. It didn’t work. Bad experience.
By Nat
Response from Onesim· Jan 3, 2023
Dear Natalie, Let me deal with your situation. We see that you activated eSIM and connected to the Internet on December 28th at 18:49 (GMT). You may not have mobile data roaming activated, or you are out of Movistar's coverage area. We will send detailed instructions to your email. In any case, please accept our apologies. Regards, Onesim Team
Did not work in mexico, was very disappointed.
By Sael R.
Response from Onesim· Jan 2, 2023
Dear Sael, We are very sorry that you had a negative experience with Onesim. We will check your case with the operator. We have made a full refund. Additionally, we will send you a promo code for a 10% discount on your next purchase. If you have any questions or issues in the future, feel free to contact [email protected] Regards, Onesim Team
