[Python] How to create a Telegram user mention link that works across all devices and profile...

I'm developing a Telegram bot, and I want to generate clickable user mentions in admin reports. These mentions should:

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  Link to the user's profile
  
  
• 
  Work on all platforms
  
  
• 
  Handle any kind of Telegram profile:
  
  
• 
  Users with a @username
  
  
• 
  Users without a username (only display name)
  

My issue:

I'm using this approach to build the mention:

mention = f'<a href="tg://user?id={user.id}">{user.full_name}</a>'


It works for most users, but:

On some devices (especially iOS), clicking the link doesn't open the profile Sometimes the name isn't rendered as a link at all

I'm not sure if I should use tg://user?id=... or https://t.me/username, or how to fall back when there's no username

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