In 2016, you could register on most platforms with just an email address. By 2026, that option has quietly vanished from nearly every major product. According to Statista, over 8.5 billion mobile subscriptions are active globally (Statista, 2025) — and platforms have figured out that a phone number, more than any other identifier, is the most reliable way to connect an account to a real person.
But “we need your phone number” covers a lot of ground. Depending on the platform asking, the underlying reason could be fraud prevention, legal compliance, identity binding, or something closer to data collection. Understanding which reason applies — and how they stack up — helps you make better decisions about which platforms deserve your personal number and when a virtual number is the smarter choice.
TL;DR: Platforms require phone verification for four main reasons: blocking bot-created fake accounts, meeting regulatory KYC/AML obligations, creating a persistent identity layer, and reducing account recovery costs. A 2024 Juniper Research study found that fraud losses from fake accounts cost platforms $48 billion annually (Juniper Research, 2024). Phone verification cuts that exposure significantly — but it also hands platforms a powerful data point about you.
How did phone verification become the default?
Phone verification became standard because email verification failed spectacularly at its intended job. Platforms adopted SMS-based OTP around 2013-2015, driven by a measurable spike in fake account fraud.
Email addresses are disposable and free. Anyone can spin up a temporary email in seconds — and automated tools can do it thousands of times per minute. When Facebook, Twitter, and Google were growing aggressively in the early 2010s, fake account creation via throwaway emails was a documented industrial operation. Bot farms running automated scripts could register thousands of accounts in an afternoon. Email verification added a single hurdle that tools quickly learned to clear.
Phone numbers are structurally different. Acquiring a SIM card still requires some friction in most countries — a retail purchase, a registration form, sometimes government ID. Until virtual numbers became widely accessible, scaling fake account creation across phone numbers was expensive and slow. The math worked in platforms’ favor: the cost to the attacker went up sharply, and fake account rates dropped.
Internal analysis of order data across the SMSCode platform shows that Indonesia, Russia, India, and the Philippines account for the largest share of virtual number demand for platform verification — which tracks directly with which countries have the lowest friction for acquiring new SIM cards, and therefore where platforms face the most synthetic account pressure.
The shift accelerated after NIST revised its Digital Identity Guidelines (SP 800-63B) in 2017, formally positioning phone-based OTP as a broadly accepted second factor (NIST, 2017). That gave enterprise compliance teams the cover they needed to mandate it internally. By 2020, phone verification had become the de facto standard across consumer tech, fintech, and e-commerce alike.
Why do financial platforms treat phone verification as a legal requirement?
Financial platforms don’t require phone verification because they think it’s a good idea. They require it because regulators say they must, and the penalties for non-compliance are significant.
The two regulatory frameworks that drive most of this are Know Your Customer (KYC) and Anti-Money Laundering (AML) requirements. Under the Financial Action Task Force (FATF) guidelines — which most developed economies have implemented into domestic law — financial services must verify the identity of their customers before providing services (FATF, 2023). Phone verification is one layer in that identity stack, though typically not the only one.
What KYC actually requires
KYC isn’t a single rule — it’s a framework. The specific requirements vary by jurisdiction, but the core obligation is the same: a financial institution must establish that the person opening an account is who they claim to be, and that they’re not a sanctioned entity or the subject of a fraud alert.
Phone verification satisfies part of this. It confirms that the account holder controls a real mobile number — something that provides a link between the digital account and a physical identifier. For low-value accounts, this may be sufficient. For higher-value services (full bank accounts, large crypto exchange withdrawals, wire transfers), platforms layer in government ID verification, address confirmation, and sometimes biometric checks on top.
The European Union’s eIDAS Regulation, updated in 2024 as eIDAS 2.0, sets a legal framework for digital identity across EU member states. It mandates that digital identity verification meet defined assurance levels — and phone verification alone doesn’t reach the highest tier (European Commission, 2024). That’s why EU fintech apps typically stack phone verification with document checks rather than using it as a standalone gate.
Why crypto exchanges are the strictest
Cryptocurrency exchanges face particularly intense KYC pressure. The Financial Crimes Enforcement Network (FinCEN) in the US classified crypto exchanges as money services businesses in 2013, subjecting them to Bank Secrecy Act obligations. Similar classifications exist in the EU (5th Anti-Money Laundering Directive), the UK (FCA registration), and Singapore (MAS licensing).
The FCA reported that 41% of digital payment fraud cases in 2024 involved accounts created with VoIP or fake phone numbers (FCA Annual Report, 2024). That statistic sits in every compliance team’s awareness. Binance, Coinbase, and Kraken don’t use aggressive phone verification because they’re cautious — they use it because regulators audit their customer verification practices and the fines for failures run into the hundreds of millions.
Does phone verification actually stop bots and fake accounts?
Phone verification reduces fake account creation significantly but doesn’t eliminate it. The real story is about economics.
According to Juniper Research, fraud losses attributed to synthetic identity and fake accounts cost digital platforms $48 billion globally in 2024 (Juniper Research, 2024). That number includes ad fraud (fake impressions, fake clicks), marketplace fraud (fake reviews, phantom listings), and social platform manipulation (fake followers, coordinated inauthentic behavior). Phone verification cuts the return on investment for attackers — it doesn’t cut the motivation.
Based on what we see across the SMSCode platform: legitimate users vastly outnumber malicious ones in virtual number purchasing. The most common use cases are account testing, privacy protection, regional account management, and developer QA — not fake account creation. Sophisticated fraud operations typically source their numbers through compromised SIMs or bulk carrier deals, not through pay-per-use services.
Why phone verification raises the floor, not the ceiling
The effectiveness of phone verification as a fraud deterrent depends on who the attacker is.
For low-sophistication actors — individuals manually creating a handful of fake accounts — requiring a phone number is a meaningful barrier. The friction is real: obtaining a legitimate SIM takes time, costs money, and in many countries leaves a paper trail.
For high-sophistication operations — organized fraud rings, nation-state-backed disinformation campaigns, professional account farming services — phone verification is a cost center, not a blocker. These actors purchase SIM cards in bulk, operate physical SIM farms with thousands of cards cycling through verification flows, and treat phone numbers as a supply chain problem.
Platforms know this. That’s why phone verification is almost always part of a layered approach rather than a standalone gate. It’s combined with device fingerprinting, IP reputation scoring, behavioral analysis, and increasingly, AI-based pattern recognition that looks at how a signup flow is navigated, not just what credentials are provided.
The velocity problem
A single phone number can still be used to create multiple accounts if the platform doesn’t enforce strict per-number limits. Most major platforms do enforce these limits — but limits can be gamed by rotating through large pools of numbers.
This is why platforms continue adding friction: phone verification plus email plus device fingerprint plus captcha plus behavioral analysis. Each layer raises the cost per fake account. At some cost threshold, the economics stop working for the attacker.
Is phone verification really about identity — or is it about you as a data point?
This is the uncomfortable question that most platform explainers skip over. Phone verification serves platforms in ways that go well beyond security.
Your phone number is one of the most stable identifiers that exists. It doesn’t change the way email addresses do. It’s tied to your real name in carrier records. It can be used to look you up across data broker databases, find your other accounts across platforms, and link your behavior across services that don’t share login credentials.
Platforms benefit from phone verification in at least three ways that aren’t about your security at all. First, a phone number is a persistent cross-platform identity anchor — it lets ad networks match your activity across services where you’ve never explicitly logged in. Second, phone numbers are valuable for retargeting: a platform with your number can upload it to Facebook’s Custom Audiences or Google’s Customer Match and target you with ads even if you’ve never visited their site. Third, phone verification creates a record of account ownership that makes account recovery cheaper — the platform offloads the identity verification cost back onto the carrier relationship.
None of this means platforms are acting in bad faith. The security benefits are real. But “phone verification protects you” and “phone verification benefits us” are both true simultaneously — and knowing which one is driving a particular platform’s requirements changes how you should respond.
For platforms where the KYC angle is strong (banks, crypto exchanges, fintech), phone verification is essentially a legal tax you pay to use the service. The privacy cost is real but likely unavoidable.
For platforms where the regulatory angle is weak (social apps, content platforms, e-commerce marketplaces), the calculus is different. The fraud prevention benefit is real, but so is the platform’s interest in acquiring your phone number as a data point. A virtual number for these registrations keeps the security benefit intact while limiting your exposure to the data collection side.
What alternatives to phone verification are platforms considering?
Phone-based SMS OTP has a known weakness: SIM swap attacks. An attacker who can convince a carrier to transfer your number gains access to any account where SMS is the recovery method. The 2020 Twitter hack that compromised Barack Obama’s, Elon Musk’s, and dozens of other high-profile accounts was enabled partly through compromised employee accounts — but SIM swap attacks on individuals follow a similar pattern and are far more common than the headline cases suggest.
This has pushed the security community toward alternatives that don’t depend on the carrier relationship.
Passkeys and FIDO2
Passkeys — based on the FIDO2 standard developed by the FIDO Alliance — allow authentication using on-device biometrics or hardware security keys rather than shared secrets like passwords or OTP codes. A passkey is a cryptographic key pair: the private key never leaves your device; the public key is stored by the platform. Authentication proves possession of the private key without transmitting it.
Apple, Google, and Microsoft all shipped passkey support across their ecosystems by 2024. As of 2025, over 15 billion user accounts can use passkeys as an authentication method (FIDO Alliance, 2025). The adoption curve is steep, but passkeys solve the SMS OTP problem elegantly — there’s nothing for an attacker to intercept or redirect.
Biometric verification
For high-assurance identity checks, platforms are adding biometric verification: a selfie matched against a government-issued ID photo. Services like Jumio, Onfido, and Persona automate this at scale. The eIDAS 2.0 framework explicitly supports biometric verification as a high-assurance identity method for EU digital identity wallets.
Biometric verification is overkill for most consumer app signups — but it’s becoming standard for regulated financial services and platforms with high-value accounts. It also creates different privacy concerns than phone verification: biometric data is permanent in a way phone numbers aren’t.
App-based authenticators
Authenticator apps (TOTP) like Google Authenticator, Authy, and 1Password’s built-in authenticator generate time-based one-time codes without any carrier dependency. They’re already available as a 2FA option on most major platforms. They don’t protect against account creation fraud the way phone verification does — you can’t use an authenticator app to prove you’re a real person at signup — but they’re far more secure than SMS OTP for ongoing authentication once an account exists.
The practical reality is that phone verification for account creation and passkeys/TOTP for ongoing authentication aren’t competing approaches — they’re complementary. Several platforms already use both: phone to establish initial identity, authenticator for daily login.
Will phone verification still exist in five years?
Phone verification isn’t going anywhere in the near term, but its role is likely to shift.
The regulatory pressure driving KYC/AML compliance isn’t easing. If anything, the expansion of eIDAS 2.0, the EU’s Digital Services Act, and the US push for stronger platform accountability means more platforms will face identity verification obligations, not fewer. Phone verification will remain one component of that stack.
What’s likely to change is the tier structure. For low-stakes accounts (content platforms, social apps, newsletters), passkeys may replace phone verification entirely over the next three to five years. The friction cost of phone verification is high relative to the fraud benefit for platforms where the accounts aren’t financially sensitive. Passkeys offer equivalent assurance with better security properties and less privacy cost.
For high-stakes accounts (financial services, healthcare platforms, identity-sensitive services), phone verification will probably remain as one layer among several, with biometric checks and government ID verification added on top. The FATF and eIDAS frameworks aren’t going to suddenly accept “user set up a passkey” as sufficient KYC.
The interesting strategic pressure runs in the opposite direction from what most people expect. As passkeys and device-based authentication improve, the weakest link in account security shifts from “can someone intercept your OTP” to “can someone steal or compromise your device.” Phone verification with SIM swap protection is a known problem; a stolen passkey-enabled device is a problem without an easy recovery path. We’ll likely see platforms invest more in account recovery mechanisms for passkey-based systems over the next few years — which is its own unsolved problem.
What should you actually do with this information?
Understanding why platforms require phone verification helps you make smarter decisions at registration time.
For regulated platforms — crypto exchanges, fintech apps, banks — your phone number is part of a legal compliance stack. You’ll need to provide it, and using a virtual number may conflict with KYC requirements depending on the platform’s policies. Read the terms before assuming a virtual number works here.
For unregulated consumer platforms — social media, content platforms, e-commerce marketplaces, dating apps — the fraud prevention case is real but the data collection motive is too. Using a virtual number for these registrations is a reasonable privacy decision. It satisfies the platform’s verification requirement while limiting your personal number’s exposure to their data systems.
For development and testing — if you’re building products that use phone verification in their own flows, you need real numbers to test with. Virtual numbers via API give you on-demand access to numbers across dozens of countries without managing physical SIMs or carrier relationships.
The right choice depends on the platform, your threat model, and what you want to protect. But it’s a choice you can make deliberately once you understand what’s actually being asked for — and why.
FAQ
Why do apps need phone verification if I already have a password?
A password alone proves you know a string of characters. A phone number proves you control a specific physical identifier that’s harder to fabricate at scale. The combination reduces both account takeover risk (an attacker needs your password and your phone) and fake account creation (mass fake accounts require large numbers of real phone numbers). According to Microsoft, accounts with multi-factor authentication are 99.9% less likely to be compromised than those with passwords alone (Microsoft Security Blog, 2023).
Can I use a virtual number for phone verification?
Yes, in most cases. Virtual numbers receive SMS codes the same way a physical SIM does. The exception is platforms with strict KYC requirements — some crypto exchanges, banks, and fintech apps specifically require a number registered in your own name, which a virtual number doesn’t satisfy. For social platforms, apps, and most e-commerce services, a virtual number works without issue. The key is using a non-VoIP SIM-backed number, not a VoIP number — platforms actively filter VoIP at the carrier lookup layer. See the non-VoIP vs VoIP guide for how detection works.
Is it legal for platforms to require my phone number?
In most jurisdictions, yes. There’s no law that prohibits a platform from requiring phone verification as a condition of service. For regulated financial services, it’s actually legally mandated by KYC/AML frameworks. The EU’s General Data Protection Regulation (GDPR) requires that data collection have a lawful basis — “legitimate interest” or “contractual necessity” typically covers phone verification — and that users are informed about how the data is used. Platforms operating in the EU must disclose their purpose for collecting your phone number in their privacy policy (GDPR Article 13, 2018).
What’s the difference between phone verification and two-factor authentication?
Phone verification at signup confirms you control a real phone number before an account is created. Two-factor authentication (2FA) is an ongoing login mechanism where a code sent to your phone is required in addition to your password each time you log in. They use the same SMS delivery mechanism but serve different purposes. Verification is a one-time identity check; 2FA is a repeated security layer. Using a virtual number for one-time verification is fine — using it for long-term 2FA on accounts you’ll keep is risky, because if you lose access to the number, you lose your 2FA recovery path.
Why does my virtual number sometimes get rejected at verification?
The most common cause is VoIP classification. When a platform queries the carrier type for your number and it comes back as “non-fixed VoIP,” the platform rejects it before sending the SMS. This affects Google Voice, Skype numbers, TextNow, and similar internet-based numbers. The fix is using a SIM-backed non-VoIP number from a reputable provider. Secondary causes include number range reputation (heavily-reused number ranges accumulate abuse signals) and platform-specific per-number limits (if the number has already been used to create too many accounts on that platform). See the non-VoIP vs VoIP numbers guide for a full breakdown.
Phone verification is one of the largest sources of friction between users and the internet. Understanding the real reasons behind it — regulatory mandates, fraud economics, identity binding, and yes, data collection — puts you in a better position to navigate it. In some cases, your personal number is the only correct answer. In many others, it isn’t.
Browse the virtual number catalog to see what’s available by platform and country, check current pricing, or create an account — no subscription required, no personal number needed to sign up.