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+# Phone Administration
+
+## Install
+
+### Install rescue system
+
+Rescue system is installed using the tool Heimdall,
+and apps are initially installed using fdroidcl.
+First install those tools onto your Debian system:
+
+    sudo apt install heimdall fdroidcl
+
+Next, locate newest rescue system for your phone:
+
+    https://twrp.me/Devices/
+
+Downloading newest rescue system needs faking the refererhint
+(here using Samsung Galaxy S3 International Exynos as example):
+
+    wget --referer=https://eu.twrp.me/i9300/twrp-3.2.1-0-i9300.img.html https://eu.twrp.me/i9300/twrp-3.2.1-0-i9300.img
+
+Install rescue system onto phone using Heimdall:
+
+ 1. Fully charge the phone.
+ 2. Disconnect any cables and turn off the phone.
+ 3. Press and hold VOL-DOWN+KEY, press POWER until logo appears (~2 seconds), release VOL-DOWN+KEY when next screen appears.
+ 4. Press VOL-UP when asked.
+ 5. Connect USB-to-PC data cable.
+ 6. Execute from terminal:
+    heimdall flash --no-reboot --RECOVERY twrp-[TAB...].img
+ 7. Disconnect any cables and turn off the phone.
+
+
+### Reset storage
+
+When taking over a phone from someone else,
+or loosing full-disk-encryption password and needing to start over,
+reset most possible before installing a fresh system onto phone:
+
+ 1. Disconnect any cables and turn off the phone.
+ 2. Press and hold VOL-UP+KEY, press POWER until logo appears (~2 seconds), release VOL-UP+KEY when next screen appears.
+ 3. [Swipe] to enter rescue mode
+ 4. Select Wipe, Format Data; type "yes"
+ 5. Select HOME, Reboot, Rescue
+ 6. [Swipe] to enter rescue mode
+ 7. Select Wipe, Advanced wipe, check all except "Micro SD card" and "USB OTG", [Swipe]
+ 8. Select HOME, Reboot, Poweroff
+
+
+### Install system
+
+Locate and download newest system for your phone
+(use menu icon in top left corner):
+
+    https://download.lineageos.org/
+
+Install system onto phone:
+
+ 1. Fully charge the phone.
+ 2. Disconnect any cables and turn off the phone.
+ 3. Press and hold VOL-UP+KEY, press POWER until logo appears (~2 seconds), release VOL-UP+KEY when next screen appears.
+ 4. [Swipe] to enter rescue mode
+ 5. Select Wipe; [Swipe]
+ 6. Select Home, Advanced, ADB Sideload; [Swipe]
+ 7. Connect USB-to-PC data cable.
+ 8. Execute from terminal:
+    adb sideload lineage-[TAB...]-signed.zip (takes ~2 minutes)
+ 9. Select HOME, Wipe; [Swipe]
+ 10. Select HOME, Reboot, System, Do Not Install - or [Swipe] if no install is offered (takes ~3 minutes)
+
+
+### Add F-droid appstore integration
+
+ 1. Disconnect any cables and turn off the phone.
+ 3. Press and hold VOL-UP+KEY, press POWER until logo appears (~2 seconds), release VOL-UP+KEY when next screen appears.
+ 3. Select Home, Advanced, ADB Sideload; [Swipe]
+ 4. Execute from terminal:
+    fdroidcl update
+    fdroidcl download org.fdroid.fdroid.privileged.ota
+ 5. Connect USB-to-PC data cable.
+ 6. Execute from terminal:
+    adb sideload ~/.cache/fdroidcl/apks/org.fdroid.fdroid.privileged.ota_[TAB...].zip
+ 7. Select HOME, Reboot, System (takes ~30 seconds)
+
+
+### Add selected apps, including F-droid appstore
+
+ 1. Execute from terminal:
+    fdroidcl install org.dmfs.tasks at.bitfire.davdroid org.birthdayadapter com.zegoggles.smssync com.moez.QKSMS
+    fdroidcl install org.sufficientlysecure.viewer com.llamacorp.equate com.gabm.screenrotationcontrol
+    fdroidcl install net.kismetwireless.android.smarterwifimanager
+    fdroidcl install com.fsck.k9 org.sufficientlysecure.keychain eu.siacs.conversations
+    fdroidcl install net.osmand.plus com.vonglasow.michael.satstat com.rareventure.gps2 de.grobox.liberario org.ametro