1. The Persistent Need for Root Access (and its inherent risks):

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As of this very second, accessing the raw file system of an Android phone in Bangladesh to locate Telegram's local database files still necessitates rooting the device. The significant risks associated with rooting (warranty voidance, security vulnerabilities, instability, bricking) persist without alteration and are strongly discouraged for the vast majority of users in Bangladesh.
2. The Unyielding Challenge of Encryption:

Even if a user in Bangladesh were to successfully root philippines telegram phone number list their device and access the Telegram database files at this precise time, the data contained within those files would almost certainly be encrypted. Standard SQLite browser tools would reveal binary data that is not human-readable without the specific decryption keys and methods, which are proprietary to Telegram and not publicly available. This directly impacts the feasibility of extracting meaningful contact information or message content for keyword analysis.