Guides · 98 guides
Everything about internet abroadFrom departure to connection.
Clear advice about mobile data, roaming, setup and coverage by destination. No technical detours, so you can leave with confidence.
For example: Türkiye, iPhone, roaming outside Europe, how many GB.
Country guides
Where are you going?
Each country guide lines up your options, your preparation and the coverage. Countries with several guides come first.
Türkiye
4 guides · Everything about an eSIM for Turkey
Indonesia
2 guides · Everything about an eSIM for Indonesia
United Arab Emirates
2 guides · Everything about an eSIM for the United Arab Emirates
United States
2 guides · Everything about an eSIM for the United States
Australia
Everything about an eSIM for Australia
Austria
Practical Austria eSIM guide covering EU roaming, Alpine reception, ski and hiking preparation, border risks, data, and installation.
Topics
What do you want to know?
The general guides, in the order a trip unfolds: choose and install first, then on the road. Guides about one country live with that country guide.
Compare
5 guides
- eSIM vs roaming: which is cheaper when traveling?
Compare a travel eSIM with roaming through your own carrier on price, convenience, coverage, and cost risk. Includes advice for travel inside and outside the EU.
- Country, regional, or global eSIM: which should you choose?
Choose a country, regional, or global eSIM based on your route, coverage, data, validity, and price. Includes a decision process for multi-country trips.
- eSIM vs iSIM: what is the difference for users?
Understand eSIM vs iSIM, where the SIM function resides, how profiles activate, which benefits iSIM offers and why you cannot convert a phone yourself.
- Best eSIM for international travel in 2026: five providers compared
Compare HolySim, Holafly, Airalo, Saily, and Nomad on data plans, hotspot, app, support, and travel profile. Choose the best eSIM for your trip.
All 5 guidesShow fewer
- eSIM vs pocket WiFi: which should you take on your trip?
An honest comparison of a travel eSIM and pocket WiFi for solo travelers, families, and remote work. Compare costs, battery, coverage, and convenience.
Devices
7 guides
- Which phones support eSIM? Models and a quick device check
See which iPhones, Samsung Galaxy, Google Pixel, OPPO, Xiaomi, and Motorola phones support eSIM and check your exact version.
- Which Samsung phones have eSIM? Galaxy models and region check
See which Samsung Galaxy S, Z, FE, and A models support eSIM. Check the model number, sales region, and SIM manager.
- Which Motorola phones have eSIM? Check Razr, Edge, and Moto G
See which Motorola Razr, Edge, and Moto G versions support eSIM and check the model number, region, and Android menu.
- Which iPhones have eSIM? Models, regions, and checks
All iPhones from the XS and XR onward support eSIM, with regional exceptions. Check your model, EID, carrier lock, and Dual SIM options.
All 7 guidesShow fewer
- Which Xiaomi phones support eSIM? Models, HyperOS, and checks
See which Xiaomi phones support eSIM, why Redmi and POCO must be considered separately, and how to check eSIM in MIUI or HyperOS.
- Which Google Pixel phones support eSIM? Models and exceptions
Google Pixel 4 and newer support eSIM. See the exceptions for Pixel 2, 3, and 3a, and check your device before installation.
- Which OPPO phones support eSIM? Compatible models and device checks
See which OPPO phones have confirmed eSIM support, why the region and model number matter, and where to check the feature in ColorOS.
Setup
13 guides
- Install and use an eSIM on a Windows laptop
Check whether your Windows laptop supports eSIM, install a profile by QR or activation code, and control mobile data use for work and travel on every trip.
- Install or activate an eSIM: understand the difference
Learn the difference between buying, installing, and activating an eSIM, when validity starts, and what to do before departure and after arrival on a trip.
- EID, ICCID, and SM-DP+: what do they mean for eSIM?
Understand EID, ICCID, IMEI, and SM-DP+, where to find these eSIM details, and which identifiers you can safely share with trusted support during setup.
- Install an eSIM on iPhone: QR code and manual entry steps
Install an eSIM on your iPhone using a QR code or manual activation details. Then configure the correct data line and data roaming.
All 13 guidesShow fewer
- Set up Dual SIM with a regular SIM and travel eSIM
Safely set up Dual SIM for calls on your own number and mobile data through a travel eSIM, with steps for iPhone, Samsung, and Pixel.
- Transfer an eSIM to a new phone: check first, delete later
Safely transfer an eSIM to a new iPhone, Samsung, or Pixel. The method depends on the device, carrier, and type of eSIM plan.
- How to activate an eSIM: from installed profile to working internet
Activate an installed eSIM by turning on the line, selecting it for mobile data, and configuring roaming correctly. Includes checks for iPhone and Android.
- Using two eSIMs at the same time: what iPhone, Pixel, and Samsung allow
Use two active eSIMs for your own number and travel data, for example. Check device support and select one line for mobile data.
- How to remove an eSIM on iPhone, Samsung, Pixel, and iPad
Only remove an eSIM when you no longer need it. First understand the difference between turning it off, deleting it, and canceling a mobile plan.
- How to install an eSIM on Apple Watch: why a travel eSIM does not work directly
Set up cellular service on an Apple Watch Cellular through the Watch app. Learn why a separate travel eSIM or QR code cannot be installed on the Watch.
- How to install an eSIM on Samsung Galaxy: QR code, SIM manager, and roaming
Add an eSIM to a Samsung Galaxy through SIM manager. Select the correct SIM for mobile data, configure roaming, and test the connection.
- How to install an eSIM on Google Pixel: add, configure, and test
Install an eSIM on Google Pixel through Network & internet. Select the data line, configure roaming, and check that the connection works.
- How to install an eSIM on iPad: mobile data on a Cellular model
Add an eSIM to an iPad Wi-Fi + Cellular using a QR code or manual details. Select the plan and test mobile data without Wi-Fi.
Data usage
9 guides
- Unlimited eSIM data: what does fair use mean?
Learn what unlimited eSIM data includes, when fair use may reduce speed, and which data, hotspot, and speed limits to check before buying a travel plan.
- How much data does Netflix use? From 0.3 to 7 GB per hour
Netflix uses up to 0.3 GB per hour on Low, 3 GB in HD, and 7 GB in 4K. See how many hours you can stream with 5, 10, or 20 GB.
- Save data on holiday: 18 measures that really make a difference
Save mobile data by downloading maps and video in advance, lowering streaming quality, stopping backups, and enabling data saving for each eSIM.
- Data usage per app: from Google Maps to TikTok
Compare how much mobile data popular apps use per hour, with guidelines for messages, music, social media, streaming, navigation, and video calls.
All 9 guidesShow fewer
- How many GB do I need for travel? Calculate your data plan
For a one-week holiday, 5 GB is often enough; for two weeks of normal use, 10 GB is a better fit. Calculate your plan from apps, trip length, and Wi-Fi.
- How much data do video calls use? From WhatsApp to Zoom
Video calls often use 0.3 to 2 GB per hour. HD group calls can use more because both uploads and downloads count against your allowance.
- How much data does TikTok use? Allow 0.5 to 1.5 GB per hour
TikTok uses an estimated 0.5 to 1.5 GB per hour. Calculate the cost of ten minutes of daily scrolling and limit video, uploads, and background data.
- How much data does YouTube use? Usage by video quality
YouTube uses an estimated 0.3 to 0.5 GB per hour at 360p and 1.5 to 3 GB at 1080p. Set mobile video quality and calculate your viewing time.
- How much data does Google Maps use? Navigation uses surprisingly little
As a guideline, Google Maps uses about 5 to 20 MB per hour for navigation. Offline maps, satellite view, searches, and traffic information change usage.
Roaming
5 guides
- Roaming: what it is, what it costs, and when to enable it
Clear guidance on EU roaming, roaming outside the EU, costs, and data roaming in Turkey, Switzerland, and Morocco.
- Roaming outside Europe: costs with KPN, Odido, and Vodafone
Compare current roaming charges, zones, and international plans from KPN, Odido, and Vodafone and choose an economical alternative for travel data.
- eSIM on a cruise or ferry: coverage, Wi-Fi, and roaming
Use your eSIM safely on a cruise or ferry. Learn the difference between land networks, ship satellite service, and Wi-Fi, and avoid surprise charges abroad.
- eSIM near a border: avoid connecting to the wrong network
Stop your eSIM connecting to the wrong network near a border. Learn how to check network selection, roaming settings, coverage, and possible costs abroad.
All 5 guidesShow fewer
- Data roaming on or off with an eSIM? Safe settings
Configure data roaming safely for a travel eSIM and stop your home SIM from using data unexpectedly. Includes precise settings for iPhone and Android.
Using eSIM
16 guides
- Top up or extend eSIM data: here is how it works
Top up your holySim eSIM from your My eSIM page, with extra data on the same eSIM right away. Plus what other providers offer and what to check first.
- Does eSIM use more battery or make your phone slower?
Learn whether eSIM affects battery or speed, how 5G, weak coverage and Dual SIM matter, and how to test performance fairly while travelling during your trip.
- eSIM during a layover: do you need another data plan?
Find out whether your eSIM works during a layover, when you need regional or country coverage, and how to switch data lines safely at the airport on your trip.
- Is an eSIM secure? Security, hacking and SIM swaps
Learn how secure an eSIM is, which risks such as phishing and SIM swaps remain, and how to protect activation codes, accounts and your device more safely.
All 16 guidesShow fewer
- Share eSIM data with family: hotspot or separate plans?
Learn how to share eSIM data by hotspot, when each family member needs a profile, and how to manage data, battery life and access securely while travelling.
- Use eSIM as backup internet during a Wi-Fi outage
Use an eSIM as backup internet by phone, laptop or router, and test coverage, hotspot access, data limits, power and security before an outage when it matters.
- Use eSIM in a mobile router: what do you need?
Check whether your mobile router supports eSIM, whether the plan permits hotspot use, and how to configure its profile, APN, Wi-Fi and data securely abroad.
- eSIM phone numbers: calls, texts, and staying reachable
Find out whether an eSIM includes a phone number, how calls and texts work, and how to stay reachable on your regular number without unexpected roaming charges.
- Business and personal lines on one phone with eSIM
Separate business and personal lines with eSIM and Dual SIM, configure data, calls and texts, and understand the limits of privacy and management at work.
- eSIM in a rental car: navigation, hotspot and privacy
Use a travel eSIM safely in a rental car for maps, music and hotspot access, limit mobile data use and erase personal information on return after every trip.
- Phone with eSIM lost or stolen: act immediately
Lost a phone with eSIM? Follow the right order to secure the device, accounts and mobile line, then arrange a replacement eSIM safely after loss abroad.
- Streaming with eSIM: do you get a local IP address?
Learn which IP a travel eSIM uses, why streaming catalogues and sports blocks may differ, and how to limit mobile data use before travelling while abroad.
- VPN and online banking with eSIM: what is secure?
Bank safely with a travel eSIM, learn when a VPN helps, and handle public Wi-Fi, bank blocks and location checks sensibly during any trip abroad with less risk.
- Airplane mode with eSIM: does your profile still work?
Learn what airplane mode does to an eSIM, which connections turn off, and how to safely restore data, roaming, Wi-Fi, and service when traveling abroad.
- Can you call 112 with a data-only eSIM?
Learn when you can call 112 with an eSIM, why a data-only plan is not a regular voice line, and which emergency settings to check before travel abroad.
- One eSIM on multiple phones: what actually works?
Learn why one eSIM cannot usually work on two phones at once, how transfer differs from sharing, and when you safely need a replacement profile on a trip.
Troubleshooting
8 guides
- No internet after eSIM installation: get mobile data working
Your eSIM is installed and may show signal, but the internet does not work. Check the data line, roaming, plan, and APN in the correct order.
- No service with your eSIM: from SOS Only to a mobile network
Seeing No Service, Searching, or SOS Only? Check coverage, the active line, roaming, and network registration without deleting your eSIM profile.
- eSIM stuck on activating: when to wait and when to act
Does your phone keep showing Activating or Activation Failed? Check the destination, Wi-Fi, line status, and carrier settings without deleting the profile.
- Cannot add an eSIM: check the phone, carrier lock, and profile
Is Add eSIM missing or does your phone reject the profile? Check eSIM support, the EID, carrier lock, internet, and existing profiles.
All 8 guidesShow fewer
- eSIM QR code not working: scan error, error message, or already used
Cannot scan the eSIM QR code or seeing an error? Check the internet connection, existing profiles, and manual activation before requesting a new code.
- No 5G with your eSIM: is it the plan, phone, or coverage?
Does 4G work but 5G never appears? Check whether the plan, network partner, phone, settings, and location all support 5G.
- Wrong APN for your eSIM: how to check and restore it safely
Have signal but no mobile data? Compare the APN with your eSIM instructions, correct wrong values, and avoid changing your other SIM.
- eSIM missing after a reset: restore the profile safely
Is your eSIM missing from SIM management after a network or factory reset? First identify what was reset and request reactivation if necessary.
Recent
New and updated
United States · Compare
Best eSIM for the United States in 2026: five providers comparedUsing eSIM
Airplane mode with eSIM: does your profile still work?Australia · Destination internet
Australia eSIM: complete guide for road trips and the OutbackAustria · Destination internet
Austria eSIM: guide for Vienna, the Alps and ski tripsBelgium · Destination internet
Belgium eSIM: guide for city breaks, Ardennes and transitCompare
Best eSIM for international travel in 2026: five providers compared
Plans
Need data for your trip?
Choose your destination and compare the available eSIM plans before you leave.