Convert Zong Postpaid to Prepaid in Pakistan: Rs 200 Plus Tax, the 90 Day Rule and Your Deposit
Convert Zong postpaid to prepaid for Rs 200 plus tax after 90 days on postpaid. Check your bill with BL to 567, ask about your deposit, and see load validity.
Zong converts a postpaid number to prepaid for Rs 200 plus tax, and only after the number has spent 90 days on postpaid, even if it was a postpaid SIM from the start. Clear your bill first. Then call 310 or visit a Zong Customer Service Centre or franchise to ask for the change.
The number stays the same. What changes is how you pay: no monthly bill and no credit limit, just loads and bundles. We read Zong's postpaid FAQs and its payment methods page on 5 November 2026. Below are the rules Zong prints, what it leaves out, and what to check before you pay.
The conversion costs Rs 200 plus tax
Zong's postpaid FAQ answers the question directly: yes, a postpaid number can become prepaid "after settling Conversion Charges of PKR 200+tax". Zong does not give the tax amount, which depends on your province, so expect to pay a little more than Rs 200.
| Rule | What Zong says |
|---|---|
| Conversion charge | Rs 200 plus tax |
| Postpaid to prepaid wait | 90 days, including the first conversion |
| Prepaid to postpaid wait | None the first time, 90 days for the second |
| Bill cycle | One cycle, 1st to the end of the month |
| Where to ask | 310 helpline, Customer Service Centre or franchise |
The same Rs 200 figure appears on Jazz for the same change. Our Jazz postpay to prepaid guide covers that network.
The 90 day rule applies even the first time
Zong applies a 90 day restriction to every postpaid to prepaid conversion, "even if the first activation is on postpaid". So a postpaid SIM bought last month cannot move to prepaid yet. Count 90 days from when the number went onto postpaid.
The rule the other way is softer. Moving from prepaid to postpaid has no wait the first time. Only a second move has the 90 day limit. So if you switched to postpaid recently and regret it, you are locked in for 90 days from that switch.
Zong does not say how it counts the 90 days, by calendar days or by bill cycles. If you are close to the line, ask on 310 for the exact date your number becomes eligible.
Clear your bill and know your credit limit first
Before converting, check what you owe. SMS "BL" to 567 for your current bill, free resources and any advance payment. SMS "CL" to 567 for your credit limit, which Zong says equals your first security deposit. Pay the full amount before you ask.
- Bill: send BL to 567, or dial *102# for remaining minutes, SMS and data.
- Credit limit: send CL to 567.
- Line rent: Zong says the bill shows line rent only up to the date it is made, charged daily, not the full month.
- Email bill: send EBSUB followed by your email address to 3100 for a free email bill.
Zong's FAQ has one more line worth knowing. If a number is dormant for 90 days or more and has reached its credit limit, Zong "reserves the right" to adjust the unpaid bill against the security deposit. Our guide to Zong postpaid plans and bill codes has the full list of 567 and 3100 codes.
How to convert, step by step
Zong's FAQ does not print a code or an online form for this change. Its postpaid page sends customers to the 310 helpline or the nearest Customer Service Centre or franchise. Take your original CNIC in case the counter asks for fingerprints.
- Check that the number has been on postpaid for at least 90 days.
- Send BL to 567 and pay the full bill.
- Call 310 from your Zong number, or visit a Zong Customer Service Centre or franchise.
- Ask for postpaid to prepaid conversion and pay Rs 200 plus tax.
- Ask how your security deposit will be returned or adjusted.
- Once you are on prepaid, load balance and subscribe to a bundle.
Zong does not say how long the change takes. Keep a receipt for the conversion charge and for your last bill payment, in case a final bill arrives later.
Ask about your security deposit before you pay
Zong's FAQ says nothing about refunding the postpaid security deposit after conversion. Since your credit limit equals that deposit, it may be a large sum. Ask at the counter whether it is refunded, adjusted against your last bill, or added to your prepaid balance.
Get the answer in writing, or note the name of the person and the date. If Zong does not return money you think you are owed, file a complaint on 310 first. If that fails, the PTA complaint route in our PTA telecom complaint guide is the next step.
Your load validity once you are on prepaid
On prepaid, each load comes with a validity period. Zong's payment page lists 30 days for a Rs 50 to Rs 99 load, up to 365 days for Rs 1,000 or more. Scratch cards come in Rs 100, Rs 300, Rs 500 and Rs 1,000.
| Zong Load amount | Scratch card | Validity |
|---|---|---|
| Rs 50 to Rs 99 | None | 30 days |
| Rs 100 to Rs 299 | Rs 100 | 60 days |
| Rs 300 to Rs 499 | Rs 300 | 90 days |
| Rs 500 to Rs 999 | Rs 500 | 180 days |
| Rs 1,000 to Rs 20,000 | Rs 1,000 | 365 days |
Load a card by dialling *101*PIN#. Check prepaid balance with *222#. For what happens when validity ends, see our prepaid balance validity guide.
Common questions
How much does Zong charge to convert postpaid to prepaid?
Zong's postpaid FAQ says Rs 200 plus tax. The tax depends on your province.
Can I convert a new Zong postpaid SIM to prepaid?
Not straight away. Zong applies a 90 day restriction even when the number was first activated on postpaid.
Is there a code to convert Zong postpaid to prepaid?
Zong's pages do not list one. Call 310 or visit a Zong Customer Service Centre or franchise.
Will my Zong number change after conversion?
No. Conversion changes how you pay, not the number.
What happens to my Zong postpaid security deposit?
Zong's FAQ does not say. Ask at the counter before you pay, and keep your deposit receipt.
How do I check my Zong postpaid bill before converting?
Send BL to 567. Zong replies with your current bill, free resources and any advance payment.
How we verified this
What we checked, where we read it, and what we could not confirm.
We read Zong's postpaid FAQs and postpaid payment methods page at zong.com.pk on 5 November 2026. The Rs 200 plus tax charge, the 90 day rules, the 567 and 3100 codes and the load validity table come from those pages. Zong does not say how long conversion takes, whether a code exists for it, or how the security deposit is handled; we have said so rather than guess. We did not convert a number.
About the author
Senior Writer, Public Services and Technology
Shahid joined us in 2024 as an author. He is a senior contributor to Pakistan's leading technology websites. He writes detailed articles, mostly covering his expertise in the latest tech, mobiles, apps, gadgets, and step-by-step guides. His ideology is to help people understand the latest trends and explain complex methods through very easy-to-understand guides.
