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 he or she is missing or marked with the verification level 1 (red), 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 both of these conditions are met, and if synchronization is enabled, any contact found during the synchronization process is automatically added to your Threema contact list and marked with verification level 2 (orange).
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).