TgFather blog
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guides
When to use a virtual number for SMS verification (and when not to)
A virtual number is a one-shot inbox, not a phone you keep. When a rental fails, and why eSIM or a cheap SIM is sometimes better.
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guides
What Are Telegram Account Formats? TData, Session, and Code Compared
TData, a Telethon session, and a login code are not the same product. How to pick a format, spot a dead file, and what aged actually means.
