slynumber.com

2.9
2.9 Based on 56 reviews

SLYNUMBER is the easiest way to add a second mobile number to your phone - no SIM card or new device is needed....

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Average Rating

2.9

/
5

56 Reviews

5 Star
45%
4 Star
0%
3 Star
2%
2 Star
4%
1 Star
50%

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Review Time

Everything I need and great customer service!

The service has worked just as advertised. I use my number for international travel and it works really well. Support has been great when I’ve had questions. I would highly recommend.

5
Date of experience: Feb 04, 2026
charles palmer
Site Is a huge scam stay sway

1
Date of experience: Jan 24, 2026
mino guirguis
Once again

Once again, I try to end out text messages, and some are delivered, and others are not delivered. I have reached out to customer service. Let's see how long it wil take them to just even answer me.

1
Date of experience: Dec 11, 2025
Natalie Craig
I would give 0 star if have such…

I would give 0 star if have such option.They "successfully" port in two of my eSIM numbers from 2 different carrier to 1 number . I'm not able to send or receive any message nor make any calls.The 'support team' if they really exist (I suspect they don't) are not respond at all. Leave me no choice but dispute for refund and the two good numbers i've ported in are lost for sure.All I can do is file a complaint against them.STAY AWAY FROM THIS STUPID APP!!!!

1
Date of experience: Dec 09, 2025
Dan Bendler
I used their service

I used their service. Their app keeps logging out (so anyone who tries calling me once I'm logged out can't reach me). I tried to port out my number but they refuse to give me my transfer PIN number.STAY AWAY!

1
Date of experience: Dec 07, 2025
LP W-Editor
A criminal enterprise

A criminal enterprise, run by a Bulgarian scammer through a UK dissolved company according to public records.Refuses to port number, which is illegal. Does not respond to support emails.Disabled SMS receiving on the number we paid for.

1
Date of experience: Dec 05, 2025
New Lapy
The worst app I have ever since. The are scammers

I don't see the need to give this app any stars because it's nothing but a scam and lies. I bought a number at the same time, and I noticed it wasn't connecting. I had to call the number 10 times before it connected. I reported, and no one helped.When I asked for a refund, they closed my account without issuing one. I have emailed them so many times, but no one has responded. I advise that no one should waste money on these people. The authority should look into these people—they need to be processed.

1
Date of experience: Nov 25, 2025
code
I recently purchased a number from…

I recently purchased a number from SlyNumber. The website and service looked good, so I decided to use it. However, I am not able to send SMS messages right now. The messages are not going through.So I contacted with support team but, they're not reply.I think this is bad service.

1
Date of experience: Nov 11, 2025
Roberto Ortis
Very bad service

Very bad service. The WiFi calling almost never works and when you contact them via email they don’t answer. Don’t waste your money on this!

1
Date of experience: Oct 22, 2025
The Hacker
Scammers at the Highest level

This app is a very shitty app , stay away and beware . Support doesn’t exist . They don’t reply to emails . They are scammers . Beware and they refuse to refund .

1
Date of experience: Oct 21, 2025

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