Saturday, November 7, 2026 · Customer reviews of US businesses
The Fair Hearing score
Average
84 reviews
SLYNUMBERSelect a line to read only those reviews.
Honesty, pricing, process and quality scores appear once 5 customers have rated them.
SLYNUMBER is the easiest way to add a second mobile number to your phone - no SIM card or new device is needed.
SLYNUMBER (slynumber.com) has 84 customer reviews on The Fair Hearing, with an average rating of 3.2 out of 5.
Showing 43 reviews with 5 stars · Clear filters
Product works perfectly. I need to be able to get 2fa messages and call a US bank from anywhere in the world and this works perfectly. The US based number is really convenient. Great pricing and the one question I had for customer service was handled quickly and efficiently.
By Alan S.
Slynumber is super easy to use—it definitely has the best interface of any other phone number app I've ever used. For anyone looking for a number from another country, it's definitely the best option.
By Mauricio F.
Customer service provided excellent advice and competent assistance. Truly appreciated Dee's willingness to assist.
By Bob
The most important part is that it lives up to the advertising. For example, 2FA is advertised and works for the large American banks while many competitors lie about it. Customer service is with a live person who always responds clearly and honestly in usually less than 24 hours. The price is reasonable and competitive for a product that is superior to most competitors. Installation on my mobile phone in Mexico was simple. Basically, it does exactly what the advertising promises, at least for my needs.
By Byron C.
The service is awesome. It makes life easier. They responded to my request in less than 24 hours with a solution, not more questions or bureaucracy.
By Adriana
I’ve had a great experience with SLYNUMBER. The service is reliable, easy to use, and everything worked smoothly after setup. Customer support was helpful and quick to respond whenever I had questions. Overall, I’m very satisfied and would definitely recommend it to others. I will continue using the service and likely extend my subscription.
By Troxell C.
Great email type service. Solved all ussues. Very attentive and caring.
By Gideon
I had a complicated issue with my account access and subscription renewal, but Myriam from the customer care team was absolutely amazing. She was very professional, patient, and guided me through the entire process until everything was fully resolved. It is rare to find such dedicated and helpful support these days. Thanks to her, I’m back into my account and my service is working perfectly. Highly recommend SLYNUMBER for their excellent customer communication! P.S. I understand the importance of bot protection, but I would suggest making this feedback page a bit simpler. Requiring an email, then a name, and then a verification code is quite a process—I almost changed my mind about leaving feedback because of it! Regardless, Myriam’s help was worth the effort.
By Artur H.
