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1 star. Does not work after latest update. I just signed up, purchased a full year and was happy that both WhatsApp and Telegram accepted the number for validation (they did NOT treat it as Virtual). However, shortly after, on 23/10, the pushed update broke the app and it no longer opens. Many other users report same. Upd 10/29 Latest Android Beta update fixed the issue without new Sly Number version. Maybe the problem was on Android side. Back to 5 stars as the app, service and price are great
★★★★★Miller Josh· Oct 25, 2025
The app is down right now what's happening it's a good app tho it just need to come back on lie asap
★★★★★Don Joe· Mar 17, 2026
This app makes claims that they do not give out VoIP numbers... which was very interesting to me upon reading... and had me curious about a few things... I rarely find an app that lets you pick a number for free... that doesn't require you to pay right away....that is a very top tier kinda service... if the call quality is good and if messages push through the notification system properly written without delay. I'm pleased to say this app has earned my 5-star rating, until further notice! Very good
★☆☆☆☆R P· May 12, 2026
Bought to open account at Fidelity. USA number (to use outside usa) on sly number fails completely : "We do not support internet based or landline phone numbers". I made the purchase after discussing my needs via Sly number support email. Now lets see how sticky they are to return my 49.99 purchase of a few hous ago. Buyer beware.
★☆☆☆☆Subhan Waheed· Dec 5, 2025
Terrible experience. 1) There was an error in processing payment 2) The app doesn't show my number 3) It doesn't allow adding the caller ID 4) It doesn't make calls. It just hangs up 5) It just doesn't work. Still waiting for the response from support team.
★☆☆☆☆Abel SecoundSon· Oct 25, 2025
It doesn't even have an option to open the app. That is not a joke, it quite literally lets you download it and doesn't have the option to open it.
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