- Phones and tablets
- Android phones and tablets
Enter PUK
Samsung Enter PUK on Galaxy: SIM card locked after wrong PINs
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
High
Quick answer
Your Galaxy asks for a PUK because the SIM card locked itself after too many wrong PIN entries. The PUK is not a Samsung or phone code: your carrier holds it. Do not guess, because wrong PUK attempts can leave the SIM unusable.
Safety first
Stop and check this first
- Never guess the PUK or use tools that promise to unlock the SIM or the network: wrong attempts can kill the SIM and only your carrier can fix it.
Safe checks you can perform
- Get the PUK from your carrier
- Enter the PUK without guessing
- Review SIM card lock once the SIM is unlocked
Leave these tasks to a qualified professional
- Do not attempt this professional task: SIM unlock or replacement from your carrier
- Do not attempt this professional task: Original provider for a network unlock code
What a technician must be able to justify
Technician visit
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
SIM unlock or replacement from your carrier
What they doIf you do not have the PUK, or the SIM has gone to PUK2 or stopped working, contact your service provider to unlock it or issue a new SIM.
They must show youyour line on their system and the lock state of the SIM.
In writingthe ticket number, whether the SIM is replaced and the activation date of the new card.
Original provider for a network unlock code
What they doIf the phone asks for a network unlock code rather than a PUK, the original provider or retailer may have locked it to their network; Samsung does not lock its devices.
They must show youthe network lock status for your IMEI and their unlock conditions.
In writingthe request reference, the IMEI covered and when the unlock will take effect.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Follow these steps
Note: Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
Get the PUK from your carrier
- Who:
- you, from another phone or through your carrier's website or app.
- How:
- contact your telecommunications provider and ask for the PUK for your SIM; Samsung sends you to your telecommunications service provider for it. Have your account details and line number ready for their security checks.
- Result that matters:
- the correct PUK in hand before you type anything on the phone.
- If you get the PUK:
- enter it carefully and set a new PIN you will remember.
- If they cannot give it:
- ask for a replacement SIM.
- Evidence to keep:
- the reference of the call or a screenshot from the carrier app.
Evidence: What is PUK code · Why does the phone asks for PUK Code?
Enter the PUK without guessing
- Who:
- you, with the code your carrier gave you.
- How:
- type the PUK on the unlock screen and set a new SIM PIN when prompted. Do not try codes at random: Samsung South Africa warns that wrong PUK attempts lead to PUK2 and then to a SIM that stops working.
- Result that matters:
- the SIM unlocks and the phone gets network service again.
- If the SIM unlocks:
- store the new PIN somewhere safe.
- If the code is rejected:
- stop and call your carrier again.
- Evidence to keep:
- how many PUK attempts you made and the outcome.
Evidence: Why does the phone asks for PUK Code?
Review SIM card lock once the SIM is unlocked
- Who:
- you, in Settings.
- How:
- open Settings > Biometrics and security > Other security settings > Set up SIM card lock. Use Change SIM card PIN to pick a PIN you will remember, or tap Lock SIM card and enter the PIN to turn the lock off if you do not want it.
- Result that matters:
- a SIM PIN you know, or no SIM PIN at all, so the lock does not repeat.
- If the setting is changed:
- the PUK prompt should not come back.
- If the phone asks for a network unlock code instead:
- that is a carrier network lock, ask the original provider.
- Evidence to keep:
- a screenshot of the SIM card lock screen.
Evidence: SIM card is asking for a PIN or network unlock code on Samsung phone
Still not solved
If the error persists, stop here. See what the technician must do and show you.
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Phones and tablets
- Brand
- Samsung
- Product type
- Android phones and tablets
Known code variants
- código PUK Samsung
- Enter PUK code
- Introduce el código PUK
- Introducir PUK
- PUK bloqueado Galaxy
- PUK code required
- PUK2 Samsung
- Samsung asks for PUK
- SIM bloqueada PUK
- SIM card PUK locked
- SIM locked PUK Galaxy
What it means
Samsung Hong Kong's "What is PUK code" and Samsung South Africa's "Why does the phone asks for PUK Code?" explain that if a SIM card lock is set and the PIN is entered wrongly too many times (more than three, per Samsung South Africa) the SIM locks and asks for a PUK, which your carrier provides. Repeated wrong PUK entries lead to PUK2, then a SIM that no longer works. Other models may word the prompt differently, and the request alone never proves the phone is faulty.
Warnings and stop conditions
- Highsource verified
Never guess the PUK or use tools that promise to unlock the SIM or the network: wrong attempts can kill the SIM and only your carrier can fix it.
Evidence: Why does the phone asks for PUK Code? · SIM card is asking for a PIN or network unlock code on Samsung phone
Symptoms and causes
Probable causes · in order
- Wrong SIM PIN entered too many timesCommon
Samsung says the SIM card is locked automatically after an incorrect PIN too many times, and South Africa puts the trigger at more than 3 wrong attempts.
Evidence: What is PUK code · Why does the phone asks for PUK Code?
- SIM card lock turned on and PIN forgottenPossible
With SIM card lock enabled the phone needs the SIM PIN each time it turns on; that PIN is separate from the screen lock and is easy to mix up.
Evidence: What is PUK code · SIM card is asking for a PIN or network unlock code on Samsung phone
- Wrong PUK entries leading to PUK2Less common
Samsung South Africa says several wrong PUK attempts make the phone ask for PUK2, and a wrong PUK2 leaves the SIM no longer functional.
Evidence: Why does the phone asks for PUK Code?
Virtual technician
Does Enter PUK still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Samsung · 2026 · official_doc
- 2
Why does the phone asks for PUK Code?
Samsung · 2026 · official_doc
- 3
SIM card is asking for a PIN or network unlock code on Samsung phone
Samsung · 2026 · official_doc
- 4
Samsung · 2026 · official_doc
- 5
Al encender el dispositivo o cuando se está usando, solicita que introduzca un código
Samsung · 2026 · official_doc
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