If you’re deciding between 2ndLine and MobileSMS.io for a second phone number, here’s the bottom line:
- 2ndLine is a VoIP-based service ideal for regular calls and texts in the US and Canada. It’s app-based, subscription-based ($9.99–$14.99/month), and works well for long-term communication. However, its numbers are often blocked for SMS verifications.
- MobileSMS.io offers real SIM-based numbers, making it highly reliable for one-time verifications on platforms like WhatsApp and banking apps. It’s pay-per-use ($3.50–$5.50 per verification) and doesn’t require an app. It also supports 100+ countries, providing better privacy and acceptance rates (over 90%).
Quick Comparison
| Feature | 2ndLine | MobileSMS.io |
|---|---|---|
| Number Type | VoIP (virtual) | Real SIM-based |
| App Required | Yes | No |
| Pricing | $9.99–$14.99/month | $3.50–$5.50/verification |
| Platform Acceptance | Low (30–50%) | High (90%+) |
| Best For | Long-term calls/texts | One-time verifications |
| Coverage | US/Canada only | 100+ countries |
If you need a second number for ongoing communication, 2ndLine is a practical choice. For secure, temporary verifications, MobileSMS.io is the clear winner.
Quick Comparison Overview
Let’s take a closer look at how 2ndLine and MobileSMS.io stack up against each other. These two services offer second phone numbers but follow completely different approaches, which makes them better suited for distinct needs.
2ndLine works as a VoIP-based app, providing virtual phone numbers through a subscription model. On the other hand, MobileSMS.io delivers real SIM-based numbers without requiring you to install any app. Instead of subscriptions, MobileSMS.io uses a pay-per-use pricing system.
When it comes to acceptance rates, VoIP numbers like those from 2ndLine are only accepted about 30–50% of the time. In contrast, real SIM-based numbers from MobileSMS.io boast over 90% acceptance, making them a more reliable choice for verification tasks.
| Feature | 2ndLine | MobileSMS.io |
|---|---|---|
| Number Type | VoIP (virtual) | Real SIM-based |
| App Required | Yes | No |
| Pricing Model | Monthly subscription | Pay-per-use |
| Typical Cost | $9.99–$14.99/month | $3.50–$5.50/verification |
| Platform Acceptance | Often blocked (30-50% success) | Widely accepted (90%+ success) |
| Best Use Case | Long-term calls/texts | One-time verifications |
| International Coverage | US/Canada primarily | 100+ countries |
| Privacy Level | Moderate | High |
For users prioritizing account verification and privacy, MobileSMS.io stands out. Its real SIM-based numbers ensure higher success rates on platforms like WhatsApp, Facebook, and banking apps. If you’re looking for a reliable option for one-time verifications or secure communications, MobileSMS.io is a strong contender.
Check out the table above to see which service better fits your communication or verification needs.
What is 2ndLine?
2ndLine is a mobile app that gives you a second phone number using VoIP (Voice over Internet Protocol) technology. Unlike traditional carriers, it creates virtual numbers that rely on the internet for calls and texts. This means your communication happens over Wi‑Fi or mobile data rather than a standard phone network.
The app is primarily designed for Android devices and focuses on providing phone numbers in the US and Canada. You can choose a number from various area codes, and setup is quick: download the app, pick your area code, and you’re good to go for calls and texts.
How VoIP Works in 2ndLine
2ndLine transforms your calls and messages into data packets that travel over the internet, bypassing the need for a physical SIM card or a carrier contract.
When you use 2ndLine, it works like a regular phone line for the person on the other end. They see your second number as a typical phone number, even if they don’t use the app themselves. This convenience makes it a fully functional second line for communication. However, it’s worth noting that VoIP technology does have some limitations, which can influence your experience.
Features and Drawbacks
For anyone needing a basic second phone number, 2ndLine offers a range of useful features. The app is free to download and use for standard calling and texting, though premium features may come with additional costs. It’s especially handy for freelancers, small business owners, or anyone who wants a separate number for things like online dating or classified ads – situations where you’d rather not share your primary number.
That said, there are some notable drawbacks tied to its VoIP foundation. Many online platforms block VoIP numbers for account verification purposes. Services like banks, social media platforms, and other verification-dependent systems often reject these numbers because they’re not tied to traditional carriers.
"VoIP phone numbers are provided by companies such as Twilio, Ring Central, Vonage, Nextiva, Grasshopper, Dialpad, and many others. These numbers are not accepted by many online services as they are often used for account verification and typically cannot receive SMS verification codes."
– MobileSMS.io
Another issue is call quality, which depends entirely on your internet connection. If your Wi‑Fi or mobile data is weak, you might experience dropped calls, delays, or poor audio – problems that are far less common with traditional cellular networks.
Common User Complaints
One of the most frequent complaints is that VoIP numbers are often rejected for SMS verification, limiting their use on many platforms.
Beyond that, users have reported reliability issues, such as app crashes, delayed messages, and occasional service outages. Because the app depends on internet connectivity, any network hiccup can disrupt its performance.
Customer support is another sticking point. Reviews suggest that response times can be slow, and users sometimes struggle to get help with technical issues, billing concerns, or account management.
Lastly, 2ndLine is restricted to US and Canadian numbers, which can be a dealbreaker for users needing numbers from other countries. Additionally, the app lacks advanced business features like call routing, team collaboration tools, or software integrations, which might frustrate users with more complex needs.
These limitations often push users to explore other options that offer better reliability and functionality.
Why MobileSMS.io Works Better
MobileSMS.io stands out by using carrier-issued numbers that function like real mobile lines, unlike 2ndLine’s internet-based virtual numbers.
Real SIM-Based Numbers
MobileSMS.io provides real SIM-card numbers, not VoIP-based ones. These are actual mobile numbers issued by legitimate carriers, making them highly reliable for online verifications. Whether you’re signing up for a social media account, verifying a bank account, or using messaging apps, these numbers are recognized as genuine by platforms, ensuring smooth verification.
On the other hand, VoIP numbers from services like 2ndLine are often flagged as virtual. This can lead to detection issues and automatic rejections during verification processes. MobileSMS.io’s use of SIM-based numbers eliminates such problems, offering a dependable solution for users.
No App Download Needed
Convenience is another key feature. MobileSMS.io operates entirely through its website, meaning there’s no need to download an app or go through lengthy setup procedures. You can access your numbers from any internet-enabled device – be it a phone, tablet, laptop, or even a public computer.
This web-based system also means you don’t have to sync data across devices or worry about losing access if your device is lost or damaged. Plus, without an app, you avoid granting permissions for contacts, location, or other sensitive information, giving you better control over your privacy. The entire process is quick and hassle-free – you can get a working phone number in just minutes.
Better Platform Acceptance
MobileSMS.io numbers are widely accepted by major platforms, offering both privacy and reliability. With a 99.7% acceptance rate, these numbers work seamlessly for verifications on social media, banking apps, messaging services, and even ride-sharing apps. Unlike VoIP numbers from 2ndLine, which are often blocked or rejected, MobileSMS.io numbers are treated as standard mobile numbers, making the verification process smoother and less frustrating.
Pay-Per-Use vs. Monthly Fees
MobileSMS.io also shines with its flexible pricing model. Instead of locking you into a monthly subscription – like 2ndLine’s $9.99 to $14.99 fees – MobileSMS.io charges only when you need a number.
For occasional verifications, this approach is far more cost-effective. Prices typically range from $3.50 to $5.50 per verification, so if you only need a number a few times a year, you’ll save significantly. For example, using a number three times annually would cost about $15 with MobileSMS.io, whereas a subscription-based service would charge much more over the course of a year.
This pay-as-you-go model eliminates the pressure to “get your money’s worth” from a subscription. It’s perfect for temporary needs or when you want to protect your privacy during online signups – without committing to ongoing monthly expenses.
Direct Feature Comparison
Let’s dive deeper into a side-by-side comparison to understand the technical differences that influence user experience.
Number Types
The primary distinction lies in the technology behind each service. 2ndLine relies on virtual VoIP numbers, while MobileSMS.io provides real, SIM-based numbers.
2ndLine numbers are entirely digital, functioning over the internet. In contrast, MobileSMS.io numbers are tied to physical SIM cards issued by legitimate carriers, making them indistinguishable from standard mobile numbers.
| Feature | 2ndLine | MobileSMS.io |
|---|---|---|
| Number Type | VoIP (virtual) | Real SIM-based |
| Physical Infrastructure | Internet-only | Physical SIM cards |
| Carrier Issued | No | Yes |
| Risk of Detection | High | Low |
This technological difference has a direct impact on how platforms perceive and accept each service’s numbers.
Platform Acceptance
When it comes to platform acceptance, the gap between these services becomes even more apparent.
VoIP numbers from 2ndLine are frequently flagged or rejected by major platforms, especially for sensitive services like financial apps. According to industry data, up to 60% of VoIP numbers are rejected due to security concerns.
On the other hand, MobileSMS.io’s real SIM-based numbers boast an impressive 99.7% acceptance rate. Because these numbers are issued by legitimate carriers, they are treated as standard mobile numbers by verification systems. This makes MobileSMS.io a far more reliable choice for users who need their numbers to pass stringent verification checks.
Pricing Differences
The two services also differ significantly in pricing models.
- 2ndLine operates on a monthly subscription, with costs ranging from $9.99 to $14.99 per month. This includes unlimited calling and texting within the US and Canada, making it a budget-friendly option for users who need consistent communication features.
- MobileSMS.io uses a pay-per-use system, charging $3.50 to $5.50 per verification, depending on the platform and country.
Here’s how the costs compare based on usage patterns:
| Usage Pattern | 2ndLine Annual Cost | MobileSMS.io Annual Cost |
|---|---|---|
| 3 verifications/year | $119.88 – $179.88 | ~$15.00 |
| 12 verifications/year | $119.88 – $179.88 | ~$60.00 |
| Daily use | $119.88 – $179.88 | $1,000+ |
For occasional verifications, MobileSMS.io is far more cost-effective. However, those needing daily communication would find 2ndLine more economical.
Country Coverage
Another key difference is the range of countries each service supports.
2ndLine is focused solely on North America, offering numbers for the US and Canada. While this works well for users operating within these regions, it’s limiting for anyone needing international options.
MobileSMS.io, however, offers numbers from over 30 countries, including:
- North America: US, Canada
- Europe: UK, Germany, France, Italy, Spain, Netherlands
- Asia-Pacific: Various countries based on demand
- Other Regions: Additional countries as needed
This broad coverage makes MobileSMS.io ideal for users requiring numbers for international platforms or businesses operating globally. The variety also provides better availability and competitive pricing across different regions.
These comparisons highlight why MobileSMS.io is a strong choice for users with diverse or global needs, while 2ndLine remains a practical option for consistent, local communication.
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When to Use Each Service
Choosing the right service depends on whether you need it for one-time verifications or ongoing communication.
One-Time Verifications
For quick, single-use verifications, MobileSMS.io is a standout option. It uses real SIM-based numbers and offers a pay-as-you-go model. This makes it perfect for verifying accounts on platforms like WhatsApp, Telegram, Facebook, or even banking apps, where VoIP numbers often fail.
MobileSMS.io provides temporary numbers that are active for just 10 minutes – ideal for setting up accounts quickly without tying them to your personal phone number. This is particularly useful for situations like creating profiles on dating websites, where privacy is a priority.
If you’re concerned about leaving a digital footprint, MobileSMS.io’s disposable numbers are a great solution. They vanish after use, ensuring no trace of your activity remains. Plus, the high acceptance rate of these numbers makes them a reliable choice for platforms that frequently block VoIP alternatives.
For those with ongoing communication needs, let’s explore how persistent numbers compare.
Regular Calling and Texting
If you’re looking for a service that supports continuous communication, 2ndLine is a better fit. Designed for professionals like small business owners, freelancers, and remote workers, it offers a persistent number with unlimited calling and texting across the US and Canada through a monthly subscription.
Unlike temporary numbers, a 2ndLine number stays active as long as your subscription is current. This stability is essential for building long-term relationships with clients and customers. Whether you’re a real estate agent, consultant, or service provider, 2ndLine allows you to keep your work and personal communications separate, all from one device. Its app integration makes managing both numbers seamless.
Privacy Protection
While MobileSMS.io is primarily known for temporary verifications, it also prioritizes user privacy. Its real SIM-based numbers aren’t tied to VoIP databases or your personal identity, and there’s no need to install an app. This makes it an excellent choice for journalists, activists, and public figures who need to maintain anonymity online.
For sensitive or anonymous verifications, MobileSMS.io provides fresh numbers for each use, ensuring your personal details remain private. The credit-based payment system means you only pay when you verify, avoiding the hassle of recurring charges.
| Use Case | Best Option | Key Advantage |
|---|---|---|
| Single account verification | MobileSMS.io | Real SIM numbers, pay-as-you-go |
| Daily business communication | 2ndLine | Unlimited calls/texts, persistent number |
| Anonymous registrations | MobileSMS.io | No app needed, temporary numbers |
| Managing client relationships | 2ndLine | Persistent number, easy app integration |
| Verification on strict platforms | MobileSMS.io | High acceptance rate |
The choice comes down to your specific needs. For occasional verifications, MobileSMS.io’s secure, temporary numbers are ideal. On the other hand, if you need consistent communication, 2ndLine’s persistent second number is the way to go.
How to Switch from 2ndLine to MobileSMS.io
Transitioning from 2ndLine to MobileSMS.io is simple and offers a completely different approach to managing your second phone number. Instead of relying on a VoIP-based app, MobileSMS.io uses real SIM-based numbers, which significantly improves reliability and platform acceptance.
Before You Cancel 2ndLine
Start by backing up any important messages, call logs, and contacts from your 2ndLine account, as this information cannot be transferred to MobileSMS.io. Additionally, make a list of all accounts linked to your 2ndLine number, especially those used for two-factor authentication or account recovery.
Many platforms block VoIP numbers, which is a common issue for 2ndLine users. Switching to MobileSMS.io, which provides real SIM-based numbers, solves this problem and ensures smoother access to platforms that restrict VoIP numbers.
Canceling Your 2ndLine Subscription
To avoid unnecessary charges, cancel your 2ndLine subscription. Monthly fees typically range from $9.99 to $14.99, so canceling promptly can save you money. Depending on your timeline, you can either cancel immediately or let the current billing cycle run its course before making the switch.
Setting Up MobileSMS.io
Visit the MobileSMS.io website and create an account using your email address. The service is browser-based, so there’s no need to download an app, freeing up storage space and avoiding battery drain.
Once registered, add credits to your account. MobileSMS.io operates on a pay-per-use model, requiring a minimum deposit of $5. These credits remain valid for 12 months, offering flexibility in usage. For US-based verifications, expect to pay between $3.50 and $5.50 per verification, which is often more cost-effective than 2ndLine’s recurring monthly fees. After setting up your account, you’ll be ready to choose and use your new number.
Selecting and Using Your New Number
Choose the country and platform for your verification needs. MobileSMS.io offers numbers from over 100 countries, with a strong focus on US-based numbers. The service boasts a 99.7% platform acceptance rate, a significant improvement over the 40% acceptance rate typical for VoIP services like 2ndLine.
Request a temporary number and use it immediately for verification. Incoming SMS codes will appear in real-time on your MobileSMS.io dashboard. For one-time verifications, their 10-minute disposable numbers are ideal. If you need ongoing access to a number, consider their long-term rental options, which start at $15 for seven days.
Updating Your Accounts
Begin by updating critical accounts like banking, email, and social media. Since MobileSMS.io does not support porting numbers from 2ndLine, you’ll need to manually update your phone number for each account.
The process typically takes a few hours, depending on how many accounts you need to update. MobileSMS.io’s real SIM numbers, with their 99.7% acceptance rate, make it easier to update accounts on platforms that often block VoIP numbers. This is especially helpful for banking apps and other security-focused services.
Cost Comparison After Switching
The financial benefits of switching depend on how you use your second phone number. MobileSMS.io’s pay-per-use fees ($3.50–$5.50 per verification) are generally more affordable for occasional users compared to 2ndLine’s monthly subscriptions ($9.99–$14.99). However, if you require constant access to a second number, MobileSMS.io’s long-term rental options ($65–$100 per month for premium all-services numbers) should be considered.
MobileSMS.io Wins for Privacy and Reliability
MobileSMS.io stands out from its VoIP competitors by delivering superior privacy, reliability, and platform acceptance. The key difference lies in the technology it employs, which directly impacts its performance in practical scenarios.
With real SIM-based numbers, MobileSMS.io achieves an impressive 99.7% acceptance rate, compared to the mere 40% typically seen with VoIP numbers. This makes it a go-to choice for services with strict security measures that often reject VoIP numbers outright.
Privacy is another area where MobileSMS.io shines. Unlike many alternatives, it doesn’t require you to install an app or create a long-term account. Instead, you can use disposable numbers that leave behind a minimal digital footprint. This approach ensures your personal information stays private.
"MobileSMS.io ensures your privacy by allowing you to use our disposable numbers instead of your personal number. This way, you never have to share your personal information with any website or app."
- MobileSMS.io
On top of its reliability and privacy, MobileSMS.io offers a cost-effective solution. With a pay-per-use pricing model ranging from $3.50 to $5.50 per verification, you avoid the higher costs of fixed monthly subscriptions.
Whether you need to verify a cryptocurrency exchange account, set up a social media profile, or access banking services, MobileSMS.io’s real SIM numbers are a dependable solution. They eliminate the hassle of failed verification attempts, ensuring smooth and uninterrupted access to the services you rely on.
FAQs
What’s the difference between VoIP-based and SIM-based second phone numbers?
VoIP phone numbers operate using internet technology, allowing users to make and receive calls or texts through an app. However, they depend on a reliable internet connection and are often subject to limitations on specific platforms due to their virtual nature.
In contrast, SIM-based phone numbers are linked to a physical SIM card, functioning like traditional phone lines. They are broadly accepted across various platforms and don’t require any app installation to operate.
Why does MobileSMS.io have a higher success rate for online verifications?
MobileSMS.io stands out by using real SIM-based phone numbers for online verifications, rather than relying on virtual or VoIP numbers. This approach ensures a higher success rate, as many platforms actively block virtual numbers but accept real SIM-based ones as legitimate.
What’s more, MobileSMS.io simplifies the process – there’s no need to download or install any apps. This makes it a fast and dependable solution for users seeking secure and hassle-free verifications.
How do I choose between a subscription-based service and a pay-per-use model for a second phone number?
When choosing between a subscription-based service and a pay-per-use model for a second phone number, it all comes down to how often you’ll use it and how much you’re willing to spend.
Subscription-based services – like 2ndLine – work best if you need a second number regularly, whether for frequent calls, texts, or ongoing communication. These plans usually come with a fixed monthly fee, which means you always know exactly what you’ll be paying.
On the flip side, pay-per-use options – such as MobileSMS.io – are perfect for occasional needs. Maybe you need a number for a one-time verification or temporary privacy. With this model, you’re only charged for what you use, making it a flexible choice without the commitment of monthly fees.
Take a moment to think about how often you’ll need the service and whether you value predictable expenses or the freedom to pay only when necessary.