Receive a verification code without sharing your everyday number.
Understand private-number verification, temporary numbers, rejected codes and account recovery. Choose one-time codes only when a temporary attempt fits.
Start with your situation.
Clear answers about verification without a personal number, short-term second lines, personal SMS, calling and mobile internet abroad.
What do you need?
Keep your usual number. Make room for a second one.
Explore short-term second-number needs, personal privacy, separate conversations, country choices and what happens when a subscription ends.
Internet abroad, without rebuilding your phone life.
Plan mobile internet for maps, messaging, multi-country travel, uncertain data needs and connectivity without a physical SIM swap.
A separate place for your personal text messages.
Understand private-number texting, separate inboxes, messages while away, delivery problems and the difference between SMS and an OTP attempt.
Plan a personal call from the right number.
Compare second-number calling, internet access, travel calls, missed calls and pre-call checks without assuming universal voice availability.
Practical eSIM guides
Is your phone ready for a travel eSIM?
Check exact model, sales region, carrier lock and dual-SIM needs before choosing a travel eSIM. A practical compatibility checklist for iPhone and Android.
Read guideInstall your travel eSIM with a clear plan.
Prepare for eSIM installation on iPhone or Android: delivery details, QR or manual setup, activation timing and choosing the correct data line.
Read guideTwo lines. One deliberate data choice.
Understand travel eSIM data roaming, your home line and automatic data switching. Review settings before departure and after returning home.
Read guideYour eSIM is not connecting. What next?
Distinguish eSIM delivery, installation, network and data-usage problems. Follow a focused troubleshooting checklist and prepare useful support details.
Read guideWhat is an eSIM, and which plan do you need?
Understand eSIM, travel data, phone numbers and setup. Choose between data-only and calls-and-texts plans without changing your everyday number.
Read guideHow to install an eSIM on iPhone
Install your DualLine eSIM on iPhone with a QR code, supported link or manual details. Choose the data line and check activation before travelling.
Read guideHow to install an eSIM on Android
Set up a DualLine travel eSIM on Android. Follow Samsung or Pixel settings, choose QR or manual installation and select the right data line.
Read guideSet up your eSIM on Samsung Galaxy
Add a delivered eSIM in Samsung SIM manager, use QR or activation details, and set mobile data and roaming for your travel package.
Read guideSet up your eSIM on Google Pixel
Add a delivered travel eSIM through Pixel SIM settings. Follow the supplied installation method and choose data, calls and text preferences.
Read guideWhatsApp with eSIM: choose data or a new number
Keep WhatsApp connected with travel data, get a WhatsApp OTP number, or choose a mobile eSIM with SMS and calls. Understand which option fits.
Read guideUse WhatsApp abroad with a travel eSIM
Keep your existing WhatsApp number while using travel eSIM data. Set the data line, control roaming and prepare for later verification.
Read guideeSIM plans with a phone number, calls and SMS
Compare mobile eSIM plans with data, a phone number, calls and SMS. Choose the incoming capabilities needed for WhatsApp registration.
Read guideTravel eSIM, roaming or a local SIM?
Compare roaming, a local SIM and a travel eSIM on cost, setup and keeping your main number reachable, and see which fits your trip.
Read guideHow much mobile data do you need for travel?
Estimate travel data from trip length and your daily usage. Compare 1GB or 5GB with your needs, and allow for calls, video, downloads and hotspot.
Read guideUnlimited eSIM data and hotspot: what to compare
Read unlimited travel eSIM fair-use, speed and hotspot terms. Share the intended data line and include connected-device use in your allowance.
Read guideHow to top up a travel eSIM in DualLine
Add an eligible data package to your delivered eSIM. Review price and validity, follow the order state and keep the installed profile.
Read guideTravel eSIM prices by country
Compare travel eSIM prices for 199 destinations: the lowest plan price, the lowest price per GB and the cheapest unlimited plan, all dated.
Read guideWill your travel eSIM connect? Networks by country
See the local mobile networks DualLine travel eSIM plans use in 199 destinations, and the checks that help your eSIM connect when you arrive.
Read guideTurkish carrier roaming or a travel eSIM? Costs compared
Turkcell, Vodafone and Türk Telekom day passes and packages next to a DualLine eSIM for Germany, the UK, the USA and the UAE, for 3, 7 or 14 days.
Read guideAT&T, Verizon or T-Mobile roaming vs a travel eSIM
AT&T International Day Pass, Verizon TravelPass and T-Mobile passes next to a DualLine eSIM for the UK, Italy, France and Japan, for 3, 7 or 14 days.
Read guideUK roaming vs a travel eSIM: EE, Vodafone, O2 and Three
EE, Vodafone, O2 and Three roaming charges next to a DualLine eSIM for Spain, France, the USA and Turkey, for 3, 7 or 14 days.
Read guideEU roaming vs a travel eSIM: where the rules end
EU roam-like-at-home does not reach Switzerland, the UK, Turkey or the USA. Telekom, Vodafone, Orange, SFR and Movistar prices there, next to a DualLine eSIM.
Read guideChoose a verification number
WhatsApp verification numbers in DualLine
Get a WhatsApp-specific OTP number in DualLine. Select the service and country, receive your registration code and understand temporary access.
Read guideTelegram verification with a one-time number
Get a Telegram sign-up code on a temporary DualLine number. Why Telegram ties the account to its number, and how to secure it before the number is gone.
Read guideWhy didn’t my verification code arrive?
The common reasons an SMS verification code never arrives, from number type to attempt limits, what to do next, and how DualLine returns unused credit.
Read guideThe risks of free “receive SMS online” sites
Free public SMS inboxes show your code to anyone who opens the page. What studies, the FTC and CISA say, and how a private one-time number differs.
Read guideServices supported for one-time codes
The 27 services you can choose for a DualLine one-time code, what some of them officially say about virtual numbers, and the rules for fair use.
Read guideSecond numbers and number types
What is a VoIP number, and when is it useful?
Understand internet-based phone numbers, personal second lines, SMS capabilities and the difference between VoIP, OTP and mobile eSIM numbers.
Read guideVirtual phone numbers: choose the right kind
Compare a personal virtual second number, a service-specific OTP number and a mobile eSIM number. Match privacy, messaging and access needs.
Read guideGoogle Voice alternatives if you live outside the US
Google Voice personal plans are US-only. Compare second-number apps you can use from abroad by sign-up rules, number countries, price and code policy.
Read guideSecond phone number apps compared
Compare DualLine, Hushed, TextNow, Burner, Saily and Surfshark by number countries, price, calls and texts, verification codes and limits.
Read guide