Checklist before buying a used or reissued SIM
Last updated 2026-07-07 By Adnan Siddiqui
Second-hand SIMs and “fancy number” deals are common in Bangladesh, but a cheap or memorable number can come with someone else’s account history. Use this checklist before you pay — whether you are buying from a GP Center, a multi-brand shop, or an individual seller.
1. Verify the number is not on a recycled list (if you care about history)
Grameenphone publishes lists of permanently deactivated numbers. Appearance on a list means the number was reclaimed by the operator — not that it is available today, but it confirms the line had a previous life. For other operators, check their policies and any public notices. A clean search does not guarantee the number was never recycled; it only means it is not on the notices we index.
2. Buy from a traceable source
Prefer operator-owned outlets (Grameenphone Center, Robi Signature, Banglalink Experience Center) over anonymous sidewalk sellers. You need a paper trail if the SIM is later blocked or tied to another person’s NID. Street deals for “premium numbers” are where recycled lines with dirty SMS history most often appear.
3. NID registration must be in your name
Bangladesh requires SIM registration against National ID. Before paying:
- Complete biometric / NID registration at the point of sale — do not accept “pre-registered” SIMs in someone else’s name.
- Confirm the number shows on your NID via the operator’s app or *16001# (BTRC short code) after registration.
- Never buy a SIM still registered to the seller — you may lose the line when they port or when regulators audit.
4. OTP smoke test (first 48 hours)
After activation, before linking bKash, Nagad, or Facebook:
- Leave the SIM in your phone for one to two days and read every SMS.
- If you see OTPs, bank alerts, or delivery codes for another person’s name, stop — see our security guide.
- Try a low-risk “forgot password” on a throwaway account you control; you should only receive your own codes.
5. Confirm balance, package, and blocking status
Dial the operator’s balance check code. Ensure the SIM is not suspended for non-payment or fraud flags from the previous owner. Ask the seller explicitly: “Was this number ported? Recycled? Why are you selling?” Vague answers are a red flag.
6. Get reissue / availability confirmed for “fancy” numbers
If you are chasing a specific number because it appeared on a recycled list, remember: listed ≠ available. Only Grameenphone (or the relevant operator) can confirm whether the number can be activated on a new SIM. Sellers who guarantee a GP recycled number without a shop receipt are often misleading you.
7. Red flags — walk away if you see these
Trust your instincts when a deal feels wrong:
- Seller refuses NID registration in your name at purchase.
- Price is far below market for a “VIP” pattern number.
- SIM has been active in someone else’s phone during your “test” — they may be intercepting SMS.
- You are asked to use the number for “verification only” and hand it back.
- Immediate flood of foreign or spam SMS upon first boot.
8. After purchase — unlink, don’t inherit
Treat the SIM as new infrastructure: set up your own accounts deliberately. Do not assume a blank SMS inbox means a blank history — some services only text on login attempts. Keep this checklist handy if you upgrade numbers later; unlink old SIMs from every service before you stop using them.