- How do I share my Threema ID?
- What do the three colored dots next to a contact mean?
- Why are some of my friends missing on my Threema contact list?
- Why are some IDs grayed out or struck through?
- Some of my contacts are displayed twice in my address book — what can I do?
- How can I change/set the name of a contact?
- What does the symbol next to a contact mean?
- How can I retain my contacts' verification levels?
- What is the Threema Channel?
- What’s the purpose of the “ECHOECHO” ID?
- What does the tilde character in the contact list mean?
Why are some of my friends missing on my Threema contact list?
Threema displays only contacts who use Threema. If you know that someone is using Threema, but they are missing or are marked with a red dot, it is because of one of the following reasons:
- Your contact has not linked his or her Threema ID with a phone number or email address.
- Your own address book contains neither your contact's phone number nor email address.
If a contact has linked a phone number or email address to their ID that is contained in your address book, the contact shows up in Threema’s contact list (provided that synchronization is enabled) and is labeled with two orange dots.
To start the synchronization process, simply tap on your contact list, drag it down and release it again. To work properly, activate the synchronization feature in Threema > Settings > Privacy. If you are an iOS user, make sure to grant Threema access to your contacts (iPhone Settings > Privacy > Contacts > enable Threema).