Open Telegram
Tap the search bar
Type the person’s name, username, or phone number
Select the correct contact from the results
Open the chat
Tap the contact’s profile name or picture
Tap Add to Contacts
Enter the person’s name if prompted
Tap Done or Save
To add someone by phone number
Open Telegram
Tap the menu or Contacts
Tap New Contact
Enter the person’s name and phone number
Tap Save
To add someone to a group
Open the group chat
Tap the group name
Tap Add Members
Select the person
Tap Add
To add someone to a channel
Open the channel
Tap the channel name
Tap Subscribers or Members
Tap Add Members
Select the person
Tap Add