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VoaSim Blog

Honest guides on travel eSIMs and internet abroad — comparisons, errors solved, real data usage and the best plan by destination. No fine print.

Comparisons

Buying a SIM at the airport vs an eSIM online before you flyWhy airport SIM kiosks charge tourist rates, how much you save buying an eSIM online befor... The best alternatives to Airalo in 2026 (when the GB run out)Airalo is cheap until the GB run out. The 2026 alternatives compared: truly unlimited (Voa... The best alternatives to Holafly in 2026 (compared with prices)If Holafly feels expensive or its fair use policy puts you off: the real 2026 alternatives... The best travel eSIMs in 2026VoaSim, Holafly, Airalo, Nomad and Saily compared: data model, real per-day price, support... eSIM vs pocket WiFiPocket WiFi (rented MiFi) against a travel eSIM: real costs with deposit and return, batte... Holafly vs AiraloWe compare Holafly and Airalo point by point: unlimited with fair use vs per-GB plans, pri... Travel eSIM or your carrier's roaming? The real mathVerizon, AT&T, T-Mobile, Vodafone, EE: we compare your carrier's international roaming pas... VoaSim vs AiraloVoaSim or Airalo for your next trip? We compare data models, real per-day price, support a... VoaSim vs aloSIMVoaSim or aloSIM? We compare truly unlimited against aloSIM's per-GB packages, today's pri... VoaSim vs HolaflyVoaSim or Holafly for your next trip? We compare data models, real per-day price, support ... VoaSim vs NomadVoaSim or Nomad for your next trip? We compare data models, real per-day price, support an... VoaSim vs SailyVoaSim or Saily for your next trip? We compare data models, real per-day price, support an... VoaSim vs UbigiVoaSim or Ubigi for your trip? We compare truly unlimited against Ubigi's per-GB plans, wi... VoaSim vs YesimVoaSim or Yesim? We compare data models (truly unlimited vs flexible plans with fair use),...

Best eSIM for...

The best eSIM for business traveleSIM for corporate trips: an invoice for expense reports, connection from touchdown, hotsp... The best eSIM for ChinaWhich eSIM to pick for China in 2026: real coverage (China Mobile, China Unicom), what to ... The best eSIM for digital nomadsWhich eSIM works for working remotely while traveling: what to check about hotspot for the... The best eSIM for exchange studentsInternet for an exchange or semester abroad: eSIM for the first weeks + local SIM later, h... The best eSIM for family travelOne eSIM per person or a shared hotspot? How to keep the whole family connected on a trip,... The best eSIM for GermanyWhich eSIM to pick for Germany in 2026: real coverage (Deutsche Telekom, Vodafone, O2), wh... The best eSIM for GreeceWhich eSIM to pick for Greece in 2026: real coverage (Cosmote, Vodafone, Nova), what to ch... The best eSIM for MoroccoWhich eSIM to pick for Morocco in 2026: real coverage (Maroc Telecom, Orange, Inwi), what ... The best eSIM for PortugalWhich eSIM to pick for Portugal in 2026: real coverage (MEO, Vodafone, NOS), what to check... The best eSIM for South KoreaWhich eSIM to pick for South Korea in 2026: real coverage (SK Telecom, KT, LG U+), what to... The best eSIM for SwitzerlandWhich eSIM to pick for Switzerland in 2026: real coverage (Swisscom, Sunrise, Salt), what ... The best eSIM for ThailandWhich eSIM to pick for Thailand in 2026: real coverage (AIS, True, Dtac), what to check be... The best eSIM for TurkeyWhich eSIM to pick for Turkey in 2026: real coverage (Turkcell, Vodafone, Türk Telekom), w... The best eSIM for the United Arab EmiratesWhich eSIM to pick for the United Arab Emirates in 2026: real coverage (Etisalat (e&), du)...

Internet by destination

eSIM or local SIM in China? The honest 2026 comparisonTravel eSIM vs buying a local SIM in China: real prices, registration paperwork, coverage ... eSIM or local SIM in France? The honest 2026 comparisonTravel eSIM vs buying a local SIM in France: real prices, registration paperwork, coverage... eSIM or local SIM in Germany? The honest 2026 comparisonTravel eSIM vs buying a local SIM in Germany: real prices, registration paperwork, coverag... eSIM or local SIM in Greece? The honest 2026 comparisonTravel eSIM vs buying a local SIM in Greece: real prices, registration paperwork, coverage... eSIM or local SIM in Italy? The honest 2026 comparisonTravel eSIM vs buying a local SIM in Italy: real prices, registration paperwork, coverage ... eSIM or local SIM in Japan? The honest 2026 comparisonTravel eSIM vs buying a local SIM in Japan: real prices, registration paperwork, coverage ... eSIM or local SIM in Morocco? The honest 2026 comparisonTravel eSIM vs buying a local SIM in Morocco: real prices, registration paperwork, coverag... eSIM or local SIM in Portugal? The honest 2026 comparisonTravel eSIM vs buying a local SIM in Portugal: real prices, registration paperwork, covera... eSIM or local SIM in South Korea? The honest 2026 comparisonTravel eSIM vs buying a local SIM in South Korea: real prices, registration paperwork, cov... eSIM or local SIM in Spain? The honest 2026 comparisonTravel eSIM vs buying a local SIM in Spain: real prices, registration paperwork, coverage ... eSIM or local SIM in Switzerland? The honest 2026 comparisonTravel eSIM vs buying a local SIM in Switzerland: real prices, registration paperwork, cov... eSIM or local SIM in Thailand? The honest 2026 comparisonTravel eSIM vs buying a local SIM in Thailand: real prices, registration paperwork, covera... eSIM or local SIM in the Netherlands? The honest 2026 comparisonTravel eSIM vs buying a local SIM in the Netherlands: real prices, registration paperwork,... eSIM or local SIM in the United Kingdom? The honest 2026 comparisonTravel eSIM vs buying a local SIM in the United Kingdom: real prices, registration paperwo... eSIM or local SIM in the United States? The honest 2026 comparisonTravel eSIM vs buying a local SIM in the United States: real prices, registration paperwor... eSIM or local SIM in Turkey? The honest 2026 comparisonTravel eSIM vs buying a local SIM in Turkey: real prices, registration paperwork, coverage... Internet in China for touristsHow to get internet in China as a tourist in 2026: travel eSIM, local SIM, roaming and Wi-... Internet in France for touristsHow to get internet in France as a tourist in 2026: travel eSIM, local SIM, roaming and Wi... Internet in Germany for touristsHow to get internet in Germany as a tourist in 2026: travel eSIM, local SIM, roaming and W... Internet in Greece for touristsHow to get internet in Greece as a tourist in 2026: travel eSIM, local SIM, roaming and Wi... Internet in Italy for touristsHow to get internet in Italy as a tourist in 2026: travel eSIM, local SIM, roaming and Wi-... Internet in Japan for touristsHow to get internet in Japan as a tourist in 2026: travel eSIM, local SIM, roaming and Wi-... Internet in Morocco for touristsHow to get internet in Morocco as a tourist in 2026: travel eSIM, local SIM, roaming and W... Internet in Portugal for touristsHow to get internet in Portugal as a tourist in 2026: travel eSIM, local SIM, roaming and ... Internet in South Korea for touristsHow to get internet in South Korea as a tourist in 2026: travel eSIM, local SIM, roaming a... Internet in Spain for touristsHow to get internet in Spain as a tourist in 2026: travel eSIM, local SIM, roaming and Wi-... Internet in Switzerland for touristsHow to get internet in Switzerland as a tourist in 2026: travel eSIM, local SIM, roaming a... Internet in Thailand for touristsHow to get internet in Thailand as a tourist in 2026: travel eSIM, local SIM, roaming and ... Internet in the Netherlands for touristsHow to get internet in the Netherlands as a tourist in 2026: travel eSIM, local SIM, roami... Internet in the United Kingdom for touristsHow to get internet in the United Kingdom as a tourist in 2026: travel eSIM, local SIM, ro... Internet in the United States for touristsHow to get internet in the United States as a tourist in 2026: travel eSIM, local SIM, roa... Internet in Turkey for touristsHow to get internet in Turkey as a tourist in 2026: travel eSIM, local SIM, roaming and Wi...

By destination

The best eSIM for Canada in 2026Which eSIM should you get for Canada? We compare unlimited vs. per-GB, local networks (Bel... The best eSIM for Europe in 2026Which eSIM should you get for Europe? We compare unlimited vs. per-GB, local networks (the... The best eSIM for France in 2026Which eSIM should you get for France? We compare unlimited vs. per-GB, local networks (Ora... The best eSIM for Italy in 2026Which eSIM should you get for Italy? We compare unlimited vs. per-GB, local networks (TIM ... The best eSIM for Japan in 2026Which eSIM should you get for Japan? We compare unlimited vs. per-GB, local networks (NTT ... The best eSIM for Spain in 2026Which eSIM should you get for Spain? We compare unlimited vs. per-GB, local networks (Movi... The best eSIM for the UK in 2026Which eSIM should you get for the United Kingdom? We compare unlimited vs. per-GB, local n... The best eSIM for the U.S. in 2026Which eSIM should you get for the United States? We compare unlimited vs. per-GB, local ne...

How many GB

How many GB do I need for a trip? The real per-day mathMaps, WhatsApp, Instagram, photos to the cloud, video calls: how much each thing uses per ... How many GB do Instagram and TikTok use while traveling? The scary mathOne hour of Reels or TikTok can eat 1.5 GB. The real data cost of social apps on a trip, h... How many GB does Google Maps use on a trip? Real measurementsWalking, driving and public-transit navigation: how many MB per hour Google Maps uses, how... How many GB does WhatsApp use on a trip? (text, voice, video)Messages, voice notes, photos, video calls: WhatsApp's real consumption per travel day and... Unlimited eSIM vs. per-GBThe honest math between per-GB plans (Airalo, Nomad, Saily) and unlimited plans (VoaSim, H...

Data & citable guides

eSIM glossary for travelersAPN, data roaming, default line, fair use, hotspot, eKYC: the 40 terms you meet when buyin... The "fair use" map for unlimited eSIMsWhat the fair use policy in unlimited eSIMs means, how to spot it before you buy and which... How much data each app uses while travelingReal usage table: Google Maps, WhatsApp, Instagram, TikTok, YouTube, Uber, Netflix, video ... How to test if your eSIM is fast (and what speed you need for each thing)How to run a proper speed test on your travel eSIM, what numbers are normal on 4G/5G and h... Internet checklist before you travelThe 12 steps so you are not offline when you land: compatibility, unlocked phone, early in... Travel eSIM cost-per-day indexWhat a travel eSIM really costs per day in 2026: real market ranges by model (per-GB, unli...

Errors & fixes

The eSIM disappeared after updating the phoneYou updated iOS or Android and the eSIM no longer shows or stopped connecting: what happen... eSIM stuck on "Activating..."Your eSIM has been on "Activating" for minutes or hours: what it means, when it is normal ... "Invalid SIM" error with an eSIMYour phone shows "Invalid SIM" with a travel eSIM: the 4 real causes (carrier lock, corrup... Is my phone eSIM compatible? Full 2026 list and how to check2026 list of eSIM-compatible phones (iPhone, Samsung, Motorola, Xiaomi, Pixel, Honor) and ... "Mobile network not available" abroadYour phone says "mobile network not available" or "no service" when you land: the 6 causes... No internet abroadMaster guide for when you lose internet mid-trip: 5-minute diagnosis, how to find emergenc... "PDP Authentication Failure" errorThe PDP Authentication Failure error shows up when using data with an eSIM on iPhone: it m... Carrier-locked phoneHow to know if your phone is locked (AT&T, Verizon, T-Mobile, Vodafone, EE...) and how to ...

Internet in practice

Bank SMS and 2FA codes abroadHow to receive bank, WhatsApp and app verification SMS abroad while using a data eSIM: the... Cruise internetDoes an eSIM work on a cruise? At sea no (nobody has land signal in the ocean); in ports y... Does a travel eSIM work on an Apple Watch, iPad or tablet?Which devices accept a travel eSIM besides the phone: iPad and tablets with eSIM yes, Appl... eSIM for backpackersThe connected backpacker's guide: a multi-country eSIM vs buying a SIM at every border, co... Google Maps offline for travelHow to download offline Google Maps before traveling, what works without internet (and wha... Sharing internet while traveling (hotspot)How to share your eSIM's internet with a laptop, tablet or family: hotspot setup on iPhone... Internet for long trips (30-60 days)How to handle internet on 1-2 month trips: long-duration eSIM vs local SIM vs combinations... Uber and ride apps abroadWhich ride app to use at each destination (Uber, Lyft, Bolt, Grab, FreeNow), how much data...

Guides

Can you use an eSIM and a physical SIM at the same time? Yes — here's the setupDual SIM for travel: your usual SIM for SMS and the eSIM for internet. How to set up each ... Does a travel eSIM work for calls? Does it have its own number?Travel eSIMs are data-only: no phone number included. How to call anyway (WhatsApp, VoIP a... Error "unable to add eSIM"The "unable to add eSIM" or "activation could not be completed" message has 4 typical caus... Does one eSIM work on two phones? How to connect your travel partnerEach eSIM installs on one phone at a time. The real options for couples and families: hots... How to install an eSIM step by step (iPhone & Android, 2026)Installing an eSIM takes 5 minutes: scan the QR, name the line and get roaming ready. Guid... What is an eSIM and how does it work? Explained without jargonAn eSIM is a digital SIM installed via QR code, without removing your regular SIM. How it ...