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Update backup info in Readme (#3393)

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* Update backup info in Readme
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Licaon_Kter 2019-03-06 08:23:44 +00:00 committed by Daniel Gultsch
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@ -291,7 +291,10 @@ Translations are managed on [Transifex](https://www.transifex.com/projects/p/con
#### How do I backup / move Conversations to a new device? #### How do I backup / move Conversations to a new device?
On the one hand Conversations supports Message Archive Management to keep a server side history of your messages so when migrating to a new device that device can display your entire history. However that does not work if you enable OMEMO due to its forward secrecy. (Read [The State of Mobile XMPP in 2016](https://gultsch.de/xmpp_2016.html) especially the section on encryption.) On the one hand Conversations supports Message Archive Management to keep a server side history of your messages so when migrating to a new device that device can display your entire history. However that does not work if you enable OMEMO due to its forward secrecy. (Read [The State of Mobile XMPP in 2016](https://gultsch.de/xmpp_2016.html) especially the section on encryption.)
If you migrate to a new device and would still like to keep your history please use a third party backup tool like [oandbackup](https://github.com/jensstein/oandbackup) (needs root access on the device) or ```adb backup``` (no root access needed) from your computer. It is important that you disable (NOT delete) your account before backup and enable it only after a successful restore, otherwise OMEMO might not work afterwards. Also, remember that you can **only** transfer the backup to either the same version of Android or to a newer one (eg. 5.1.1 -> 5.1.1 or 5.1.1 -> 6.0.1). As of version 2.4.0 an integrated Backup & Restore function will help with this, go to Settings → Expert settings → Create backup. A notification will pop-up during the creation process that will announce you when it's ready. After the files, one for each account, are created, you can move the **Conversations** folder *(if you want your old media files too)* or only the **Conversations/Backup** folder *(for OMEMO keys and history only)* to your new device (or to a storage place) where a freshly installed Conversations can restore each account. Don't forget to enable the accounts after a succesful restore.
**WARNING**: Be sure to know your accounts passwords or find ways to reset them **before** doing the backup as the files are encrypted using those passwords and the Restore process will ask for them.
**WARNING**: Do not use the restore backup feature in an attempt to clone (run simultaneously) an installation. Restoring a backup is only meant for migrations or in case you’ve lost the original device.
#### Conversations is missing a certain feature #### Conversations is missing a certain feature