Carrier lock: how to check your iPhone or Android phone is unlocked before a trip

Nadezhda Semenova

7 years in business, co-founder of the Trippy travel service

Updated 22 Oct 2026 · How we check

What a carrier lock (network lock) is

Apple: “Your iPhone may be locked to your network provider. Unlocking your iPhone means you can use it with different network providers.” Google says a phone bought from a mobile service provider “could be SIM-locked for up to 2 years”. Until the seller removes the lock or the contract ends, it “can get mobile service only from that service provider”.

Google adds: “Your phone can come SIM-locked or SIM-unlocked, depending on where you bought it.” On Apple’s unlock page, the eSIM case comes after the unlock, under “If you need to activate an eSIM from a network provider other than your current network provider”. Run the check on every phone, whether it was bought in India, abroad or handed down.

Check an iPhone: “No SIM Restrictions” next to Network Provider Lock

To check for a carrier lock on an iPhone, open Settings, tap General, tap About. Apple’s travel page (118227, checked 20 Oct 2026): “If your iPhone is unlocked, ‘No SIM Restrictions’ will appear next to Network Provider Lock.” Apple’s unlock page (109316, published 26 Jan 2026) prints it as “No SIM restrictions”, lower-case r, and adds: “If you can’t see that message, contact your network provider.”

Scroll down the same About screen for the IMEI (Apple 108037); the IMEI guide explains it. For two lines on one iPhone, the dual SIM guide covers the same lock rule and the data-line settings.

Check an Android phone: what Samsung and Google print

Samsung India’s support pages we read give no way to check. Google’s Pixel Help 7107188 (no date on the page, checked 20 Oct 2026) prints the rule, “To use a phone with any mobile operator, not just the phone seller’s network, the phone must be SIM-unlocked”, but no Settings path to check it.

Samsung’s eSIM page (updated 19 Sep 2026) mentions a lock once, when you move an eSIM from another device: “Your new device must be unlocked for the transfer to be successful.” Google says: “All phones in the Google Store come unlocked.” No maker page we read describes a lock test with another operator’s SIM. For any other phone, ask the seller or your operator.

Locked? Only the operator that locked it can unlock it

Apple: “Apple can’t unlock your iPhone for use with a different network provider. Only your current network provider can unlock your iPhone.” It adds: “It may take the network provider a few days to complete your request to unlock your iPhone. Contact your network provider to check the status of your request.” Ask well before the trip, not at the airport.

For a Pixel, Google says “you can contact your mobile service provider to discuss your options.” We hold no Jio, Airtel or Vi unlock policy, so ask your operator what it requires. If the unlock does not come through in time, your operator’s international roaming packs are on our Jio, Airtel and Vi roaming page.

“Locked SIM” on screen is a different lock: the SIM PIN

“Locked SIM” in the status bar is not a carrier lock. It is Apple’s wording for a SIM PIN: “Lock your SIM card or eSIM with a PIN (personal identification number) so that an identification code is required for phone calls and mobile data usage.” After a restart or a removed SIM, “you’ll see ‘Locked SIM’ in the status bar.”

The fixes differ: a carrier lock needs the operator, a SIM PIN needs the code. Apple’s path: Settings, tap Cellular; on a Dual SIM or Dual eSIM iPhone, tap the number, then SIM PIN. Apple warns: “Don’t try to guess your SIM PIN. The wrong guess can lock your SIM card or eSIM permanently, which means you would need a new SIM card or eSIM.” For a forgotten PIN: “Contact the network provider that gave you the SIM card or eSIM.” If an alert says “PUK exhausted”, ask for a new SIM or eSIM. Other alerts, such as “No SIM” or “Invalid SIM”, have their own checks in our SIM message guide.

Before you buy a travel eSIM: the check and our refund rule

Run the lock check at home, before you pay, and check your model on the eSIM phone list or in the iPhone eSIM guide. If your phone has no eSIM, do not buy one. Install the eSIM in India; it connects when you land abroad. The iPhone install guide and the Android install guide have the taps.

Full refund within 30 days of purchase, as long as the eSIM has not connected to any network. If the eSIM doesn’t work and it isn’t your phone’s fault, we refund the payment whether or not it was installed.

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