| Method | Privacy Level | Permanence | Cost | |---------------------------------|---------------|------------|------------| | | High | High | $5–20 | | Second real SIM (registered) | Medium | High | $2–10/month| | Telegram via Session or Molly | Very High (no number needed) | N/A | Free | | Fragment (TON blockchain number) | Medium-High | Permanent | ~$10–50 (NFT-based) |