How do I fix the "network error" message on Threema?
This error is usually caused by a weak or unstable internet connection. Try connecting to a different Wi-Fi or mobile data network, or switch to a stronger network.
Why does my message keep failing to send on Threema?
This could be due to a poor internet connection or server issues. Try sending the message again or restarting the app.
How do I resolve the "contact not found" error on Threema?
This means the contact you are trying to message is not using Threema or does not have you saved as a contact. Ask them to download Threema or to add you as a contact.
I keep getting the "encryption failed" message on Threema, what should I do?
This usually occurs when one or both parties have outdated versions of Threema. Make sure both users have the latest version, and if the issue persists, try restarting the app.
Why am I unable to register my phone number on Threema?
This could be due to a technical issue or your phone number being already associated with another Threema account. Contact Threema support for assistance.
How do I fix the "invalid QR code" error on Threema?
This means the QR code you are scanning is either expired or has already been used. Try generating a new QR code or scanning a different one.
Why is my Threema account showing as "offline" when I am connected to the internet?
This could happen if your phone's battery-saving mode is turned on, which may restrict background data. Disable battery saving mode or allow Threema to use background data.
How can I resolve the "phone not verified" error on Threema?
This happens when you are trying to use a phone number that is not registered on your phone's SIM card. Make sure you are using the correct SIM card or contact Threema support for further assistance.
I am receiving the "message not delivered" notification on Threema, what does it mean?
This usually happens when the recipient's phone is turned off or they do not have an internet connection. The message will be delivered once the recipient is back online.
Why did I receive a "message rejected" notification on Threema?
This could be due to a temporary server issue, or the receiving user may have enabled message rejection for unknown contacts. Contact the user to add you as a contact.
Can I delete a message on Threema that has already been sent?
No, messages cannot be deleted after they have been sent. You can only delete them on your own device, the recipient will still have the message.
How do I backup my Threema chats and contacts?
Threema does not offer cloud backup, but you can export and save your chats and contacts on your device or a third-party app.
I am unable to download media files sent to me on Threema, what should I do?
Make sure you have enough storage space on your device and a stable internet connection. You can also try clearing the app's cache or restarting your device.
Why am I seeing "user not authorized" when trying to add a contact on Threema?
This means the contact has not verified their Threema account yet. Ask them to verify their account and try adding them again.
How do I fix the "400 Bad Request" error on Threema?
This error usually occurs when there is a problem with Threema's server. Wait a few minutes and try again, or contact Threema support for further assistance.
Can I use Threema on multiple devices?
Yes, you can use Threema on up to 3 devices with one account, but you can only have one active session at a time.
Why am I seeing a "storage full" warning on Threema even though I have enough storage space?
This warning appears when your device's internal storage is almost full. Try freeing up some space by deleting unnecessary files or apps.
How do I resolve the "no connection" error on Threema?
This means the app is unable to establish a connection with the Threema server. Try restarting the app or your device, or check for any network or server issues.
I accidentally deleted a contact on Threema, can I recover it?
No, once a contact is deleted on Threema, it cannot be recovered. You will have to add them as a new contact.
How can I report a bug or issue with the Threema app?
You can report bugs and issues through Threema's support page or by sending an email to [email protected]
Why am I unable to use Threema Web on my computer?
Threema Web requires the use of QR code scanning, which is not supported on all browsers. Try using a different browser or check the system requirements for Threema Web.
How do I resolve the "camera not available" error on Threema?
This could be due to a problem with your device's camera or the app's camera permission being disabled. Make sure you have a working camera and enable the camera permission for Threema.
Why is my Threema profile picture not updating?
This could happen if your phone's photo gallery has restricted Threema's access to photos. Allow Threema to access your photos in the phone's settings and try updating your profile picture again.
How do I fix the "cancelled" status on a Threema voice call?
This means the call was ended by one of the parties. Try calling again or check for any network or server issues.
Can I customize the notification sounds for Threema?
Yes, you can change the notification sounds for different types of messages in the app's settings.
Why am I not receiving notifications for new messages on Threema?
This could be due to your device's battery-saving mode, notification settings for Threema, or a network issue. Make sure you have notifications and background data enabled for Threema, and check your device's battery-saving settings.
