Comparison

Temporary number vs a second SIM or eSIM

A second line is great for long-term use. For one code, it’s overkill.

3 min read

Second SIM / eSIM

Yours for months, can receive calls
Monthly fee and often ID checks
Good for recovery and long-term 2FA

Temporary number

Yours for one verification
Pay per code, no contract
Not for account recovery

Verdict

Use a second line for accounts you’ll keep for years. Use a temporary number for sign-ups where your real number isn’t needed.