SLYFONE vs Nextline
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SLYFONE
Obtain a genuine US mobile number for essential verifications and communications, alongside a global eSIM for data access in over 110 countries. This app ensures privacy, facilitates international calls, and provides reliable connectivity for travel and business.
- Virtual US mobile number
- Global eSIM for data
- App and account verifications
- Two-factor authentication
- International calls and texts
- Spam blocking
- No roaming fees
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Get a Real US Mobile Number + Global eSIM in One Powerful App SLYFONE is the only app that gives you both: A real U.S. mobile number (not VoIP) for verifications, calls, and secure texting A global eSIM to stay connected with mobile data in 110+ countries Use SLYFONE to activate WhatsApp, protect your privacy, make international calls, and stay online wherever life takes you. What Makes SLYFONE Unique? Unlike VoIP apps, SLYFONE gives you a real mobile number you can use for app signups, banking, and secure 2FA. And with built-in global eSIM, you get instant, affordable data without SIM cards, roaming charges, or local carriers. Whether you're at home, traveling, or building your business, SLYFONE has you covered. Top Features Virtual U.S. Mobile Number - Activate apps like WhatsApp, Telegram, Zelle, PayPal & more - Receive SMS for 2FA or signups (works with banks, crypto, social media) - Make & receive calls or texts over Wi-Fi/data - Caller ID, voicemail, call forwarding, and spam blocking - Perfect second line for business or privacy Global eSIM Coverage - Get mobile data in over 100 countries — no SIM card needed - Easy to install and activate from the app - Avoid roaming fees while traveling - Use alongside your SLYFONE number for full global connectivity - Ideal for travelers, expats, digital nomads, and remote workers Use SLYFONE For: - App & account verifications (WhatsApp, Uber, Binance, etc.) - Two-factor authentication (2FA) codes from banks and social platforms - Traveling without roaming or SIM swaps - Keeping your personal number private - Running your small business or side hustle with a dedicated line -Secure texting & calling while abroad All-In-One Communication Tools - Real US number (not VoIP) - Global eSIM (travel-ready) - Send/receive texts & calls - Spam call blocking - Call forwarding to any US/Canada number - Caller ID & voicemail transcription - Share media in messages - Number porting support - Free toll-free calls (no subscription needed) Subscription Plans A paid plan is required to activate and use your US number. - 3-Month Plan – $8.99 - Annual Plan – $29.99 - Outbound Credits – $10 for 1000 credits (1 credit = 1 SMS or 1 min call) No hidden fees. No free trial. Please review pricing before purchasing. Privacy Policy: https://slyfone.com/privacy/ Terms of Use: https://slyfone.com/terms.html
Nextline
Get instant global connectivity with an e-SIM in over 120 countries, avoiding roaming fees. This app also provides a second phone number for enhanced privacy and convenience, with unlimited calls and texts.
- Global e-SIM connectivity in 120+ countries
- Second US phone number
- Unlimited calls and texts
- No roaming fees
- Privacy protection
- Easy e-SIM installation
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Activate Nextline’s e-SIM to get online instantly in 120+ countries. Enjoy seamless global connectivity without roaming fees. No need for physical SIM cards—just easy, affordable service. With Nextline’s e-SIM, you can connect to the internet in 120+ countries and regions worldwide, avoiding expensive roaming fees. No need to swap SIM cards or carry another phone. Enjoy real US phone numbers with unlimited calls and texts. What is an e-SIM? An e-SIM is an embedded SIM card built into your phone’s hardware. It functions like a physical SIM but works 100% digitally. Purchase an e-SIM with Nextline, install it on your device, and connect to a mobile network at your destination. No physical SIM cards, spotty Wi-Fi, or surprise roaming fees—just seamless, affordable, and flexible connectivity. Nextline e-SIM Plans A Nextline e-SIM plan provides mobile data, call, and text services. Choose a prepaid local or regional e-SIM plan to get online in 120+ countries worldwide. Select your e-SIM package and connect to a mobile network when you arrive at your destination! How It Works? Install the Nextline app. Purchase an e-SIM plan. Install the e-SIM in minutes. Turn on your e-SIM and connect to the internet when you arrive. Our e-SIM feature is available in 120+ countries, including: US Canada UK Spain India Greece Brazil Italy France Turkey Second Phone Number Nextline also offers a second phone number option for added privacy and convenience. Available in the US, UK, Canada, France, and Portugal, this feature allows you to keep your personal number safe, separate work and personal life, and easily manage new contacts and verifications. Choose from over 300 US area codes for your local number. Easy and Risk-Free Nextline is easy and risk-free to use. No contracts, no hassles, and no verification required. Keep your conversations private and dispose of your number when done. Protect your privacy with unlimited texts and calls. Features Local numbers in over 300 US area codes Unlimited calls and texts Access contacts easily Call forwarding Access your account on any device with Wi-Fi or data Why Nextline? Instant global connectivity in 120+ countries Affordable e-SIM plans with no hidden fees Unlimited calls and texts Privacy protection with a second phone number Works on any supported device Ideal for travelers and busy lifestyles Easy disposal of your Nextline number Who Benefits from Nextline? Travelers: Stay connected without roaming fees. Digital Nomads: Manage work and life on the go. Business Professionals: Separate work and personal numbers. Frequent Shoppers: Secure transactions with a second number. Privacy Seekers: Protect your personal number in any situation. Nextline Subscription Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Need Help? Our support team is here for you. Contact us through the app or email support@nextlineapp.com. Your feedback drives our improvements! Stay Safe with Nextline Please note, Nextline does not support emergency services. Enable push notifications for the best experience. Join the Nextline Family Experience seamless, secure, and flexible communication. Stay connected with Nextline and open up a world of possibilities! Terms of Service: https://nextlineapp.com/terms-of-service Privacy Policy: https://nextlineapp.com/privacy-policy
Screenshots
Verdict
SLYFONE and Nextline both sit at 4.6 stars, but that hides the real split: 80% of Nextline's written reviews are positive against 24% of SLYFONE's. Nextline also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 6 weeks). SLYFONE's advantage is monetization model (free with in-app purchases vs subscription) and iOS requirement (15.0 vs 17.0). On price, rating, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SLYFONE sells 7 in-app purchases, starting at $14.99 per 3 months and Nextline sells 7 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.6 for SLYFONE against 4.7 for Nextline. That said, the two scores are not equally well evidenced: Nextline has 9.4K ratings behind it against 789, so its average is the more settled of the two. Written reviews are what separate them: 24% of SLYFONE's written reviews are positive against 80% of Nextline's.
SLYFONE ships an update every 6 weeks, Nextline every 2 weeks. The most recent releases landed on September 23, 2026 and September 27, 2026 respectively.
| Parameter | SLYFONE | Nextline |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (789 ratings) | 4.7 (9.4K ratings) — better |
| Positive reviews | 23.7% of reviews | 80.5% of reviews — better |
| Number of ratings | 789 | 9.4K — better |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 94 MB | 102 MB |
| Age rating | 4+ | 4+ |
| Developer | MobileSphere, Ltd | GRAND APPS YAZILIM VE TEKNOLOJI ANONIM SIRKETI |
Customer experience
SLYFONE
Nextline
User reviews
SLYFONE
From 789 App Store ratingsWhat we love
- ⭐ Excellent app
- 🙌 Saved me from a problem
- 👍 Very good
Room to improve
- 💰 Expensive subscription
- 🔒 Unsafe app with harassment
- 🐛 Non-functioning features
- 🚫 Doesn't work as advertised
- 📞 Poor call quality
Nextline
From 9.4K App Store ratingsWhat we love
- 💯 Reliable and easy to use
- 🕰️ Quick setup and activation
- 📞 Good call quality
- 💳 Affordable subscription options
Room to improve
- 🔍 Lack of transparency around pricing and features
- 🚫 Unexpected charges and hidden fees
- 🔌 Unreliable connectivity and service disruptions
- 🔒 Account and number management issues
- 🤖 Poor customer support and unresponsive to user feedback
Bugs and requests
SLYFONE
Reported bugs
4 issues- Account temporarily unavailable
- Texts/codes not received
- Calls not working properly
- Login/sign-up issues
Requested features
3 requests- Fix international prefix support
- Improve call forwarding
- Add more features like Dingtone app
Nextline
Reported bugs
3 issues- Frequent app crashes and errors
- Inability to send/receive messages
- Problems with account restoration and number porting
Requested features
4 requests- Ability to change phone numbers easily
- Improved messaging capabilities including picture/video support
- Option to disable in-app purchases
- Detailed usage tracking and analytics
In-app purchases
SLYFONE
- Three Months Plan$14.993 Months
- Yearly Plan$49.991 Year
- eSIM$3.00
- 10 Dollar Credit Bundle$10.00
- 25 Dollar Credit Bundle$25.00
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- 50 Dollar Credit Bundle$50.00
- 100 Dollar Credit Bundle$100.00
Nextline
- Weekly Subscription3 Days trial$4.997 Days
- Weekly Subscription3 Days trial$7.997 Days
- Monthly Subscription5 variants$9.991 Month
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- Annual Subscription$59.991 Year
- 40 Credits$0.99
- 120 Credits$2.99
- 150 Credits$3.99








