Prepaid vs Postpaid SIM Registration Rules in Pakistan
"Prepaid ya postpaid?" It's the first question at any franchise counter, and most people answer it in two seconds based on price and habit. What few realise is that the answer changes more than your bill. It decides how the SIM is verified after the counter, when your porting clock starts, what happens if you switch networks, and what a mistake costs you. Prepaid is pay-as-you-go. Postpaid is a credit relationship, with a security deposit, a monthly bill and a person who is on the hook when it isn't paid. This guide sets the two side by side, based on PTA's published guidelines and the operators' own pages, and it's clear about where the sources go quiet.
Both need your original CNIC and biometric verification, both are registered against your identity, and both show up when you check your CNIC. What differs is what comes after: postpaid adds a refundable security deposit, a plan and a bill, starts its porting clock at sale instead of at biometric activation, and has financial hurdles when you switch networks.
The prepaid lane
- Original CNIC at an authorised franchise
- Fingerprint verification against NADRA
- SIM activated
- Load balance, use it, top up when it runs out
The postpaid lane
- Original CNIC at an authorised franchise
- Fingerprint verification against NADRA
- Plan chosen, refundable security deposit paid (extra step)
- Line active within a credit limit
- Monthly bill, which you must pay to leave cleanly (extra step)
The highlighted steps are where the two lanes really diverge. Everything else is shared.
The Rules That Are Identical
It helps to start with what doesn't change, because it's most of the system.
- Identity. A Pakistani citizen needs their original CNIC and presence at the counter for fingerprint verification. Jazz's own FAQ says exactly this for a new postpaid SIM, and PTA's consumer guidance describes the same process for SIM issuance generally. Foreigners use a passport with a valid visa, and overseas Pakistanis use their NICOP, according to Jazz. Our guide to biometric verification explains how the two-finger check works and what to do if your fingerprints fail.
- The registry. Whether a SIM is prepaid or postpaid, it's registered against your CNIC. Text your CNIC to 668 or use the portal and both kinds appear in your count. Our 668 SMS code guide and cnic.sims.pk portal guide show how.
- The cap. PTA's public FAQ describes a personal limit of five voice and three data SIMs per CNIC. I found nothing suggesting postpaid is exempt, and our guide to the 8-SIM cap explains what counts.
- A valid CNIC. An expired card is a risk for either type, as our guide to expired CNICs and SIM blocking explains.
Prepaid Registration, Step by Step
For prepaid, PTA describes the process in its consumer guidance on biometric verification. In practice:
- Choose an authorised franchise or service centre. Roadside stalls are not the place to give a fingerprint.
- Read the terms shown at the sale channel, then give the agent your CNIC number.
- Put your thumb or finger on the scanner. Under the current system, it asks for two different fingers chosen by the system, and a maximum of two successful impressions are needed.
- Wait for NADRA's result. On success, the SIM is activated and handed over. On failure, the agent should explain why.
- Check afterwards. Run 668, and text MNP to 667 from the new SIM to see its record.
For prepaid connections, PTA's MNP guidelines define the activation date as the moment the SIM is activated through biometric verification under PTA's SOP. That detail matters later, when we get to porting clocks.
Postpaid: What's Extra
Postpaid adds a financial layer on top of the same identity check. Jazz's FAQ gives a concrete picture. A new postpaid SIM starts from Rs. 350, plus a refundable security deposit that depends on the selected price plan, with a minimum of Rs. 1,100 as listed, though the amount can vary. Prices change, so check the current figure on the operator's page. Zong's postpaid FAQ shows the other side of the deposit: if a number has been dormant for 90 days or more and the credit limit has been reached, the company reserves the right to adjust the outstanding bill against your deposit.
Some third-party guides go further and say postpaid requires proof of income, proof of address and a credit check. I couldn't find that on Jazz's page, which lists the CNIC, biometric verification and deposit. Operators can set their own commercial criteria, so if you're applying, ask the franchise what they need. Just don't treat an unsourced list as the official one.
The practical consequence of a postpaid line is simple. You are now a customer with a running account, and that account keeps growing until it's settled and closed properly. For an operator's own page on the subject, start with Jazz's FAQs or Zong's postpaid FAQs, and our Zong SIM owner details guide covers that network's side of registration checks.
Converting Between the Two
Many people start prepaid and move to postpaid later, and the operators' pages show the outline.
- Prepaid to postpaid at Jazz: Jazz's conversion page says to attach a copy of your CNIC and submit a security deposit, use up your prepaid balance because it can't be used or transferred after conversion, receive your postpaid SIM, and insert it once your prepaid connection stops receiving signals. The normal billing cycle starts from then.
- At Zong: its postpaid FAQ describes a 90-day restriction on converting prepaid to postpaid, which applies to a second conversion and not the first.
- Postpaid to prepaid during a port: PTA's guidelines say the donor operator may convert the number from postpaid to prepaid to settle amounts, that the conversion isn't charged to the subscriber, and that it isn't marked as a "new sale", so the 60-day restriction doesn't apply again.
The exact steps and charges can differ by operator and change over time, so confirm them on the official page before you go.
Which Clock Starts When
This is the least-known difference, and it comes straight from PTA's MNP guidelines. Before a number can be ported out, it needs to complete a 60-day minimum subscription period. What starts that clock depends on the connection.
| Connection | The 60-day clock starts |
|---|---|
| New prepaid SIM | When the SIM is activated through biometric verification |
| New postpaid SIM | From the sale of the SIM to the subscriber |
| A ported-in number | On the date of porting, as recorded by the number portability clearinghouse |
| After a change of ownership | The date of the change becomes the new activation date |
Try it yourself. Pick your situation, and the tool shows what starts the clock. It runs in your browser, and nothing you choose is stored or sent.
Clock starter
What kind of number is it?
Don't confuse this with the 365-day lock, which is a different rule about disowning. Our guide to the 365-day SIM disowning rule explains that one, and it's unclear from the reports how it applies to postpaid lines, so ask your operator if that's your situation.
Leaving a Postpaid Line Cleanly
Getting out of a postpaid line is where careless people lose money. A few habits keep it tidy.
- Settle the final bill first. Ask for the outstanding amount up to a specific date, and pay it before you go anywhere.
- Ask about the deposit. It's described as refundable, so ask how long a refund takes and how you'll receive it.
- Don't leave the line dormant. Zong's postpaid FAQ says that after 90 days of dormancy with the credit limit reached, an outstanding bill can be adjusted against your deposit, which can shrink what you get back.
- Get confirmation. A reference number or written note that the account is closed, so a stray charge can't reappear as a recovery notice.
- Check afterwards. Run 668 and see whether the count matches what you expect.
One open question: how the 365-day disowning lock applies to a postpaid line isn't clear from the reports I found. If you're planning to close a line you activated recently, ask the operator to explain both the billing and the ownership side.
Switching Networks: Prepaid and Postpaid Differ
Porting is where the two lanes feel most different. Both start the same way, with MNP to 667 and biometric verification, as our MNP 667 code guide describes. After that, the paths split.
| Prepaid | Postpaid | |
|---|---|---|
| Money owed | None. But unused balance on the old number isn't refunded ("use it or lose it") | Outstanding amounts must be settled up to the time of the port request, and a security deposit may be required |
| Holds | Rarely | The donor can hold the request while dues are settled, for up to 9 business days, or 14 for international roaming customers |
| Credit limit | Not applicable | May be cut to 60 percent of the deposit while the request is processed |
| Roaming | Not applicable | International roaming may be withdrawn once the request is received |
| Common rejection | Name or ID mismatch | Balance outstanding, on top of name or ID mismatch |
The lesson: if you're postpaid and planning a switch, settle the account first and leave time for a hold. If you're prepaid, spend the balance before you go.
Your SIM Type, Officially
Not sure whether a SIM counts as prepaid or postpaid on the operator's records? The reply to MNP 667 answers it directly. PTA's guidelines list a CONNECTION-TYPE field with three values.
- PREPrepaid
- POSPostpaid without international roaming
- PIRPostpaid with international roaming
It's a handy check if you inherited a SIM, bought a phone with a line already in it, or simply can't remember which you signed up for. And since the same reply shows the registered name, it also tells you whose account it is, which our guide to the name on a SIM explains.
Kamran's Surprise Bill
Picture Kamran. Months after handing a CNIC photocopy to a "friendly agent" for a promotion, he gets a bill he doesn't recognise. A postpaid line has been running in his name, and someone else has been using it. The operator's recovery agency is asking him to settle it.
This is the nightmare version of the postpaid difference. A prepaid SIM opened in your name can be misused, but it doesn't generate a growing debt. A postpaid one does. Kamran is invented, but the pattern isn't. The corporate version of the same story led to a Rs. 38.9 million fine against an operator in August 2026, as we describe in our guide to corporate SIMs on an NTN.
- Check your count with 668 or the portal, and look for a line you don't recognise.
- Report it to the operator straight away, and ask for a reference number.
- Escalate to PTA on 0800-55055 or through its complaint portal if it isn't resolved.
- Remember the law. Using someone's identity information without authorisation is what section 16 of PECA 2016 covers, and our guide to fake SIM data offers explains how such data gets around.
What About eSIMs?
Reports say Jazz, Zong and Ufone support eSIM for both prepaid and postpaid lines, and that activation uses the same biometric verification as a plastic SIM, followed by a QR code. I'd treat the details as reported, since services and charges change quickly. What I haven't seen is PTA spelling out how eSIMs are counted against the SIM limit, so ask your operator, as we note in our guide to the 8-SIM cap.
Assumptions I Couldn't Confirm
Because so much advice on this topic is copied between sites, here are the claims I looked for and couldn't support.
| The claim | What I found |
|---|---|
| "Postpaid doesn't need biometrics" | Jazz's FAQ says fingerprint verification is needed for a new postpaid SIM |
| "Postpaid always needs proof of income and a credit check" | Stated by third-party guides. Not on the operator page I read |
| "Postpaid SIMs don't count toward the limit" | No source found. Assume they count |
| "Converting resets everything" | Operator pages describe a new SIM and a new billing cycle, not a reset of your CNIC's registrations |
| "Guides' status codes show your verification status" | Unverified, as we explain in our guide to biometric verification |
A Quick Way to Choose
This is general guidance, not a regulation, but it's what the registration differences suggest.
| Your situation | Usually a better fit | Why |
|---|---|---|
| Steady monthly spend, one main number | Postpaid | A predictable bill, but you'll pay a deposit and must settle before leaving |
| A spare line or occasional use | Prepaid | No bill, no deposit, and easy to stop using |
| A data SIM for a router, tablet or tracker | Prepaid, often | Fewer strings attached, but remember it still uses one of your three data slots |
| You're close to the SIM limit | Whichever you'll keep longest | Both count toward the limit, and a newly activated SIM is locked for a year |
| A young adult's first line | Prepaid, on their own CNIC | Keeps responsibility with the person on record |
Before You Register or Convert
- Check your count first. Text 668, so you know where you stand against the limit.
- Decide which type you really need. A regular monthly spend and a stable address point to postpaid. A spare or occasional line usually points to prepaid.
- Ask about the deposit. How much, and how and when it's refunded when you leave.
- Bring your original CNIC, and check it hasn't expired.
- Use an authorised outlet, and never give a fingerprint on paper.
- Keep the paperwork. A receipt, the plan name and the activation date all help later.
- Check again afterwards, and screenshot 668 and 667 privately.
If you're weighing a switch between networks or types, our CNIC SIM check guide is a good companion, and the legal answer on SIM owner details by number explains why the checks that exist are built around your own records.
Prepaid vs Postpaid: FAQs
Do prepaid and postpaid SIMs have different registration rules?
Does a postpaid SIM need biometric verification?
How much is the security deposit for postpaid?
Can I convert my prepaid SIM to postpaid?
How can I tell if my SIM is prepaid or postpaid?
When does the 60-day porting clock start?
What happens to my postpaid dues if I switch networks?
Do postpaid SIMs count toward the limit of five voice and three data SIMs?
What if a postpaid line was opened in my name without my knowledge?
Do eSIMs follow the same rules?
Same Identity Check. Different Consequences.
Whichever lane you're in, a two-minute look at your own CNIC keeps every line accounted for.
Related guides: SIM Owner Details (main guide) · Biometric Verification (BVS) · How Many SIMs on One CNIC · MNP 667 Code Explained · 365-Day SIM Disowning Rule · Corporate SIMs on NTN.
Note: prices, deposits and procedures change. Confirm current details on your operator's official page and pta.gov.pk. This site is independent and is not a PTA or government service.