LM CLASSIC KNOWLEDGE BASE

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====== Disappearing maps, points and tracks ======

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===== Problem =====
From time to time, some users complain that their **Locus data mysteriously disappeared**. Most often, they noticed that after their system update, after restarting the phone, and of course, after the factory reset.
===== Cause =====
==== Memory cleaner ====

99,9% of these users are owners of **Xiaomi** od **Huawei/Honor** phones and tablets. The one and only cause of disappearing Locus data in these devices is a very **aggressive memory cleaning software**, part of MIUI or EMUI operating platforms running on these devices. 
==== Factory reset ====
Locus Map in its default settings stores its data in the **internal memory** of the phone or tablet. During the factory reset, the inner memory is **completely wiped out**. Together with your precious Locus data.
===== Solution =====
==== Exclude Locus Map from memory cleaning ====
When your Xiaomi or Huawei alerts you that they desperately need memory cleaning, please, be careful. In some devices/OS versions, it is possible to exclude Locus Map from memory cleaning:
  * run  memory cleaner once
  * if Locus Map is marked as an app to be cleaned, hold finger on it and then select to **exclude Locus Map from the process**

Other devices don't offer this option so you have to **exclude Locus from cleaning each time manually** - unfold all categories in the cleaning list and uncheck all boxes containing Locus Map.
<WRAP center round important>
**Never allow fully automatic memory cleaning!!**
</WRAP>
==== Back up tracks, points and maps to a cloud ====
We strongly recommend making **backups of your data outside of your phone or tablet**. Tracks, points, settings and also downloaded maps can be backed up to a cloud (Dropbox/Google Drive) in Locus:
  * **[[manual:user_guide:tools:backup|How to back up your tracks, points, and settings >>]]**
  * **[[manual:user_guide:maps_offline#cloud_backup_of_maps|How to back up your downloaded maps >>]]**
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