THE SHORT ANSWER

Open Telegram and review Devices or Active Sessions in Settings (the exact label and path can vary by platform), then end any session you no longer recognize or need. Treat that cleanup as separate from removing a public username or deleting conversations, because each step changes something different about your account.

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Start with session review, not message cleanup

After using a shared computer, the most direct protective step is to look at where your account is signed in and close sessions you no longer need. Deleting a conversation or changing a public username will not end an active session on another machine, so begin with the device list and keep the rest of the cleanup for later. Session review is about access; the other actions are about content and visibility. [Telegram FAQ: Devices and Active Sessions]

How to find and close obsolete sessions

In Telegram, the relevant area is Devices, or Active Sessions under Privacy & Security. Exact menu labels and navigation can differ between platforms and app versions, so follow what your own app shows rather than assuming a fixed path. Inside that view you can terminate an old device session. Work slowly: identify each session, decide whether you still use it, and end only the ones that are obsolete or unfamiliar. If a session you need is ended by mistake, you can typically sign in again on that device. [Telegram FAQ: Devices and Active Sessions]

  • Open Settings and locate Devices or Active Sessions (labels vary by platform).
  • List sessions and note any device, browser or location you do not expect.
  • Terminate obsolete sessions one at a time, checking the list after each change.

Separating three different tasks

These jobs are easy to blur, but they affect different things. Reviewing and ending sessions controls where the account is signed in. Removing a public username changes how people find or mention the account publicly. Deleting conversations changes stored messages and does not by itself revoke a signed-in device. Two-Step Verification is yet another separate account control. Keeping these apart prevents the false comfort of thinking one action covered all of them. [Telegram FAQ: Devices and Active Sessions]

What a session list can and cannot tell you

A session list is a practical access check, not a detective tool. Seeing a session does not prove who used it, what they did, or whether anything was copied. Likewise, ending a session stops that access going forward, but it is not proof about past activity. Treat labels such as device type, app or approximate location as clues to compare with your own habits, not as identification of a person.

observationlimitnext step
A session you do not rememberMemory is imperfect; the label may be a device you used elsewhereDecide whether you still need it, then end or keep it deliberately
Device or app name you do not useNames can be generic or misread at a glanceCompare with your own devices before acting
Ending a sessionDoes not tell you what happened previouslyNote what you changed and review the list again later

A calm order of operations

First, review sessions and end the obsolete ones. Second, decide whether your public username needs attention; that is a visibility choice, not a security fix. Third, deal with conversations only if you actually want them removed. If you are unsure whether a session belongs to you, sign in again on your own device and recheck the list rather than guessing.

  • Review sessions first and end the clearly obsolete ones.
  • Decide separately whether to change a public username.
  • Delete conversations only if you want the messages gone.
  • Recheck the session list after making changes.

If you are still uncertain afterward

You may not be able to resolve every question from the device list alone. Choose the step that reduces access first, such as ending a session you do not need, and leave identity questions open rather than treating a device label as proof of anything. Write down what you changed and when, so a later review has a reference point. [Telegram FAQ: Devices and Active Sessions]

A couple more questions

Does deleting a conversation also sign out a shared computer?

No. Deleting conversations and ending sessions are separate actions. End the session in the device or active-session view if your goal is to remove that access.

Is changing my public username a security fix?

It changes public visibility, not where the account is signed in. Review sessions separately if your concern is access from another device.

Can the device list tell me who used my account?

No. It shows sessions, not people. Device and location labels are clues to compare with your own use, not identification or proof of activity.

What if I accidentally end a session I still need?

Sign in again on that device. Ending a session logs it out; it does not remove the device or the account.

Sources & editorial notes

Official references checked on October 23, 2026. Checklists, comparison tables and example wording are DateClues editorial tools, not official tests or validated risk scores.

General information. No guide or tool can certify a person’s identity, intentions or safety. Read our editorial standards.