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# Session Android
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[Download on the Google Play Store ](https://getsession.org/android )
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Add the [F-Droid repo ](https://fdroid.getsession.org/ )
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[Download the APK from here ](https://github.com/oxen-io/session-android/releases/latest )
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## Summary
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Session integrates directly with [Oxen Service Nodes ](https://docs.oxen.io/about-the-oxen-blockchain/oxen-service-nodes ), which are a set of distributed, decentralized and Sybil resistant nodes. Service Nodes act as servers which store messages offline, and a set of nodes which allow for onion routing functionality obfuscating users' IP addresses. For a full understanding of how Session works, read the [Session Whitepaper ](https://getsession.org/whitepaper ).
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< img src = "https://i.imgur.com/wcdAGBh.png" width = "320" / >
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## Want to contribute? Found a bug or have a feature request?
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Please search for any [existing issues ](https://github.com/oxen-io/session-android/issues ) that describe your bugs in order to avoid duplicate submissions. Submissions can be made by making a pull request to our `dev` branch. If you don't know where to start contributing, try reading the Github issues page for ideas.
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## Build instructions
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Build instructions can be found in [BUILDING.md ](BUILDING.md ).
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## Translations
Want to help us translate Session into your language? You can do so at https://crowdin.com/project/session-android!
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## Verifying signatures
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**Step 1:**
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```
wget https://raw.githubusercontent.com/oxen-io/oxen-core/master/utils/gpg_keys/KeeJef.asc
gpg --import KeeJef.asc
```
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**Step 2:**
Get the signed hash for this release. `SESSION_VERSION` needs to be updated for the release you want to verify.
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```
export SESSION_VERSION=1.10.4
wget https://github.com/oxen-io/session-android/releases/download/$SESSION_VERSION/signatures.asc
```
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**Step 3:**
Verify the signature of the hashes of the files.
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```
gpg --verify signatures.asc 2>& 1 |grep "Good signature from"
```
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The command above should print "`Good signature from "Kee Jefferys...`". If it does, the hashes are valid but we still have to make the sure the signed hashes matches the downloaded files.
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**Step 4:**
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Make sure the two commands below returns the same hash. If they do, files are valid.
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```
sha256sum session-$SESSION_VERSION-universal.apk
grep universal.apk signatures.asc
```
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## License
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Copyright 2011 Whisper Systems
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Copyright 2013-2017 Open Whisper Systems
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Copyright 2019-2021 The Oxen Project
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Licensed under the GPLv3: http://www.gnu.org/licenses/gpl-3.0.html
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## Socials
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< a href = "https://twitter.com/session_app" >
< img align = "left" width = "26px" src = "https://www.vectorlogo.zone/logos/twitter/twitter-official.svg" / >
< / a >
< a href = "mailto:support@getsession.org" >
< img align = "left" width = "26px" src = "https://www.vectorlogo.zone/logos/gmail/gmail-icon.svg" / >
< / a >
