Teleb — Support

You need two devices. Teleb sends a file from one screen to another camera, so a single device cannot transfer to itself. The two do not need to match — iPhone to Android works, in either direction.

Getting started

1. 01On the receiving device, tap Receive. It shows a code.
2. 02On the sending device, tap Send, pick a file, then point its camera at the receiver's code.
3. 03Both devices show the same three words. Check they match, then accept on both.
4. 04The sender fills its screen with a moving code. Hold the receiver's camera facing it, about 20 cm away, and wait.

Troubleshooting

Nothing is being received.

Check the distance first — about 20 cm, with the whole code inside the frame. Then check for glare: a reflection across either screen is the most common cause. Raise the sender’s screen brightness. Avoid direct sunlight.

It is going slowly.

It is meant to be slow. Light through a camera is a narrow channel, and Teleb is built for the cases where no faster channel exists. Missing frames cost time but never the file — Teleb uses fountain coding, so every frame is equally useful and none is essential. Holding steadier is the only speed-up.

The sender says "Stopped", not "Sent".

That is correct, and deliberate. There is no back-channel of any kind, so the sending device genuinely cannot know whether anything arrived. Claiming delivery it cannot verify would be a lie, so it does not. Check the receiving device — it knows, and it will tell you.

My video was refused.

Video is refused on purpose. A short clip would take the better part of an hour on this channel. Teleb says so up front rather than letting you find out twenty minutes in.

My file is too large.

Above a certain size Teleb warns and asks again; above a higher one it refuses. For files that big, a cable is the right tool. The "What Teleb can and can't do" page inside the app gives the current thresholds.

The three words do not match.

Stop. Do not accept. Matching words are what prove you are talking to the phone in front of you rather than something in between. If they differ, start over somewhere else.

A received file is missing.

Received files go to Teleb’s own folder, visible in the Files app on iOS. If you chose to save a photo to your library, it is in Photos instead.

Reporting a problem

Email sgyeom0319@gmail.com. The most useful report includes both device models and OS versions, which side failed (sending or receiving), roughly how far the transfer got, and the file type and size.