Unofficial guide · Last verified: July 2026 · Official portal linked below.

Sun SIM Registration (2026)

ByRoman Mercado

Sun Cellular

Sun Cellular is a legacy Smart brand — remaining active Sun SIMs register through Smart’s portal and app.

By Roman Mercado · Updated July 2026 · Unofficial guide

Open Sun Cellular portal
Jump to steps

Opens simreg.smart.com.ph — Sun Cellular’s site, not ours.

Sun Cellular SIM registration for remaining active lines goes through Smart at simreg.smart.com.ph as of July 2026. Sun is largely phased out, but unregistered Sun SIMs still face deactivation under RA 11934. Use valid ID and OTP on the Smart portal or Smart App. Unofficial guide.

On this page
  1. Sun brand status
  2. Who must register
  3. Register online
  4. Check status
  5. Smart family

Open Sun Cellular official registration

simreg.smart.com.ph — Sun Cellular’s website, not ours. You are leaving phsimregistration.com. Last verified: July 2026.

Step-by-step

  1. Use Smart portal

    Sun has no separate portal in 2026.

  2. Verify OTP

    SIM must be active enough to receive SMS.

  3. Submit ID

    Same ID list as Smart — valid IDs.

  4. Confirm

    Check status before relying on the line long-term.

Sun Cellular in 2026

Sun was merged into the Smart ecosystem years ago. New Sun-branded SIMs are rare. If your SIM still connects as Sun, treat it as a Smart-network SIM for registration purposes.

Who must register Sun SIMs

  • Any active Sun prepaid SIM still receiving signal.
  • Users who skipped the 2023 mass registration window.

If your SIM no longer activates, you may need a new Smart/TNT SIM instead of registering Sun.

Register Sun via Smart portal

  1. Open simreg.smart.com.ph.
  2. Enter your Sun mobile number.
  3. Complete OTP, ID upload, and selfie.
  4. Submit and confirm.

Full detail: Smart SIM registration.

Check Sun registration status

Use Smart App or portal. SMS codes are inconsistent — see status guide.

Related guides

How to check status


Open Sun Cellular official registration

simreg.smart.com.ph — Sun Cellular’s website, not ours. You are leaving phsimregistration.com. Last verified: July 2026.

See also our status check wizard.

Frequently asked questions

Is Sun still a separate network?

Sun is legacy; active SIMs register through Smart systems.

Sun registration URL?

simreg.smart.com.ph — Smart link page.

Can I buy new Sun SIM in 2026?

Unlikely at scale; retailers mostly sell Smart/TNT. Registration rules still apply to old Sun SIMs.

Sun SIM deactivated — re-register?

Try portal; if blocked, Smart store with ID. Deactivated guide.

Same ID rules as Smart?

Yes. RA 11934 and Smart acceptance list apply.

Sun SIM still works in 2026?

Some legacy Sun SIMs remain active on Smart network; register to avoid deactivation.

Where to register Sun — Smart store?

Yes. Smart Business Centers accept Sun SIM registration with valid ID.

Sun to TNT migration — re-register?

If you changed SIM brand, register the active number on Smart portal.

Sources

  • https://simreg.smart.com.ph
  • Smart Sun migration notices
  • Republic Act No. 11934

Facts last verified: July 2026.

Similar Posts