
Work through these in order. They are arranged by how often each one turns out to be the actual cause, so the earliest steps fix the most cases. The last three are not phone problems at all — they are the plan doing what its policy says it will do.
Diagnosis map
Start at 1 and stop at the first check that fails. If every phone check passes and there is still no data, the cause is usually the plan’s own policy.
On your phone
Every phone check passes, still no data?
The plan’s own policy, not a fault
Still stuck: contact your provider with your order reference and the eSIM’s ICCID.
The checklist
Step 01: Is the eSIM actually installed on this device?
CheckOpen your cellular or mobile-network settings and confirm the travel plan appears as its own line. An emailed QR code that was never scanned is not an installed eSIM.
If that is the problemInstall it while you still have Wi-Fi. Most travel eSIM profiles can only be downloaded once, so do this before you delete anything.
General device guidance. Not a provider-specific published fact — exact wording and menu paths vary by device and operating system version.
Step 02: Is the travel eSIM the line selected for cellular data?
CheckOn iPhone: Settings → Cellular → Cellular Data, then select the travel line. A dual-SIM phone will otherwise keep trying to use your home line.
If that is the problemSelect the travel line for data. This is the single most common cause of “installed but no internet”.
Published guidance: Apple Support
Step 03: Is data roaming enabled on the travel line?
CheckTravel eSIMs normally connect as a roaming guest on a local network, so the roaming toggle on that line usually has to be on even though you bought the plan for that country.
If that is the problemEnable data roaming on the travel line only. Leave it off on your home line so you do not run up home-carrier roaming charges.
General device guidance. Not a provider-specific published fact — exact wording and menu paths vary by device and operating system version.
Step 04: Does this plan need its APN entered manually?
CheckSome profiles do not configure the APN automatically, and some need it specifically for the personal hotspot to work. The provider states this on the plan's installation page.
If that is the problemEnter the APN exactly as the provider publishes it, including capitalisation, then restart the device.
Published guidance: Airalo Help Center
Step 05: Has the line registered on a network yet?
CheckLook for an operator name on the travel line rather than “No Service” or “Searching”. Registration can take a couple of minutes after landing.
If that is the problemToggle airplane mode, then fully power the device off and on. If it still will not register, try selecting the operator manually in network settings.
General device guidance. Not a provider-specific published fact — exact wording and menu paths vary by device and operating system version.
- Plan policy, not a fault
Step 06: Has the plan actually started, or has it already expired?
CheckSome plans start counting down when you install them, others when they first connect at the destination. A plan installed weeks early can already be spent.
If that is the problemCheck the plan's activation policy with the provider. If it started early, the remedy is a new plan rather than a settings change.
Published guidance: Airalo Help Center
- Plan policy, not a fault
Step 07: Is it connected but slow rather than dead?
CheckIf pages load eventually but video will not play, you have probably passed the plan's daily high-speed allowance rather than lost connectivity.
If that is the problemThis is fair use, not a fault. It normally restores at the next reset. Check what your provider publishes about its limit.
General device guidance. Not a provider-specific published fact — exact wording and menu paths vary by device and operating system version.
- Plan policy, not a fault
Step 08: Is it only the hotspot that fails?
CheckIf the phone itself is online but tethered devices are not, the cause is usually plan policy or a missing APN rather than the phone.
If that is the problemCheck whether your plan permits tethering at all, and whether it needs a manual APN first.
General device guidance. Not a provider-specific published fact — exact wording and menu paths vary by device and operating system version.
When the phone is fine and the plan is the problem
3 of the steps above are not faults. They are the plan behaving as its published policy says it will. No amount of restarting changes them, and support cannot either.
How NexKit checked this
Every figure on this page was read from the provider’s own terms, help centre or product page on the date shown, and links back to that page. Each fact also states its reach, so a policy read from one product family is never presented as covering everything a provider sells. Where a provider states a policy but publishes no number in the pages we checked, this page says so and lists what we checked. Source links are citations, not paid links. A separately labelled provider CTA may be an affiliate link; commission never changes the evidence, comparison order or recommendation method.
Read the full review methodologyWhere to go from here
Next step
If the diagnosis is the plan rather than the phone, compare what providers actually publish.