How do I move a prepaid line to a postpaid plan?
How to move a prepaid line onto a postpaid plan and set the usage alert that keeps your first bill from surprising you.
Short answer
Open your carrier's app, find the Switch to Postpaid option under My Plan, finish identity verification and pick a plan. Once the request is approved, go to Usage and Notification settings in the same app and set alert thresholds for data, minutes and SMS. Confirm the contract terms and the exact switch date with your carrier.
What you need
Step by step
Check who owns the line
Only the registered owner can request a switch to postpaid. Open My Account or My Profile in the app and check whose name the line is registered under. If it belongs to someone else, an ownership transfer has to happen first, and that is done in a carrier store with ID.
Start the Switch to Postpaid flow
Open the carrier app and go to My Plan or Plans and Packages from the bottom menu. You will see one of these headings: Switch to Postpaid, Move to a Postpaid Plan, or Change Plan. If you would rather not use the app, call customer service or visit a dealer.
Complete identity verification
You will be asked to confirm your ID details, and most carriers add a face scan or ID card read. The app requests camera access, so stand in good light without glasses or a mask. If this step fails, the request stays pending and you can verify in person at a store.
Pick your plan and billing settings
Choose the postpaid plan that fits you, comparing its data, minutes and SMS against your actual usage. Then set the billing cycle date, your e-invoice preference and an automatic payment instruction if you want one. Read the commitment period and early termination fee clauses before approving.
Approve the contract and wait for activation
The app sends a confirmation code by SMS or asks you to sign an electronic contract. After you enter the code and finish, track progress under My Requests or Transaction History. The switch usually takes effect with the next billing period, so confirm the exact date from the carrier's notification message.
Set up the usage alert
Once the switch is active, open Usage, Remaining Usage or My Bill in the app. From the Usage Alert, Limit Alert or Notification Settings menu, set the threshold as a percentage or an amount for data, minutes and SMS, and turn on both SMS and in-app notifications.
Review the bill cap and roaming settings
Most carriers offer a Bill Limit or Spending Limit option in the same section, which stops data use once you exceed your package. If you are not travelling abroad, turning off roaming and value-added services from My Services cuts down unexpected charges.
Test that the alert works
After saving, refresh the screen and confirm the threshold shows as stored. If no SMS arrives when you pass the threshold during the month, check the notification permissions on your phone and your commercial message preferences with the carrier. If it still fails, ask customer service whether the record is active.
Tips
Watch out
The most common mistake is approving without reading the commitment clause. Postpaid plans usually include a fixed-term commitment, and closing the line, porting to another carrier or moving to a cheaper plan before it ends can trigger an early termination fee. A usage alert is not an automatic cut-off either; to actually stop usage you also need a bill or spending limit.
Frequently asked questions
+Does my number change when I move to postpaid?
No, your number stays the same. Moving a prepaid line to a postpaid plan is a plan change, not a number port.
+Do I have to visit a store to switch?
Usually not. If you can complete identity verification in the carrier app, the whole thing is done remotely; a store visit is needed only if verification fails or the line is in someone else's name.
+Is the usage alert free?
Carriers generally provide usage and limit alert notifications free of charge as standard. It is still worth confirming in your own carrier's service description.
+Can I go back from postpaid to prepaid?
Most carriers allow it, but if you have a commitment, returning before it ends can trigger an early termination fee. You request it from the My Plan menu or through customer service.
+I got the usage alert but was still charged extra. Why?
The alert is informational only; usage does not stop on its own when you pass the threshold. To avoid overage charges you need to set a bill or spending limit.
Sources and verification
Last verified: September 15, 2026. tell us. Menu names follow Turkish carrier apps and may appear with slightly different wording in the English interface.
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