From 90e054b52bf76737120d7b4f531b10ca3d7b746a Mon Sep 17 00:00:00 2001
From: Silvio Rhatto <rhatto@riseup.net>
Date: Tue, 18 Apr 2017 20:34:58 -0300
Subject: Adds research/smartphone

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+[[!meta title="Smartphone"]]
+
+Pesquisa rápida sobre smartphones.
+
+Objetivo
+--------
+
+* [LineageOs](https://lineageos.org).
+
+Prós
+----
+
+* Código mais aberto.
+* Risco menor de backdoors.
+* Google Apps não-mandatório.
+
+Contras
+-------
+
+* Menos base de aplicativo.
+* Atualizações de segurança mais lentas.
+* Redução de segurança por conta to root?
+
+LineageOS
+---------
+
+* [Update and build preparation](http://lineageos.org/Update-and-Build-Prep/).
+* [Moto E surnia builds](https://download.lineageos.org/surnia).
+* [Verifying builds](http://wiki.lineageos.org/verifying-builds.html).
+
+### Destravamento
+
+    # stretch onwards: sudo apt install adb fastboot
+    sudo apt install android-tools-adb android-tools-fastboot
+
+    1 20160410 14:55:06 user@box:~ $ adb reboot bootloader
+    0 20160410 14:55:22 user@box:~ $ fastboot devices
+    0012711246      fastboot
+    0 20160410 14:55:40 user@box:~ $ fastboot oem get_unlock_data
+    ...
+    (bootloader) [...]
+    OKAY [  0.235s]
+    finished. total time: 0.235s
+    0 20160410 14:56:01 user@box:~ $ fastboot oem unlock $code
+    ...
+    (bootloader) Check 'Allow OEM Unlock' in Developer Options.
+    FAILED (remote failure)
+    finished. total time: 0.007s
+    1 20160410 15:30:32 user@box:~ $ fastboot devices
+    0012711246      fastboot
+    0 20160410 15:30:49 user@box:~ $ 
+
+## Recovery
+
+Usando o [TWRP para Moto E surnia](https://twrp.me/devices/motorolamotoelte.html):
+
+    adb reboot bootloader
+    fastboot flash recovery recovery.img
+    fastboot reboot
+
+Instalação manual de apps
+-------------------------
+
+    adb install app.apk
+
+Upgrade
+-------
+
+Procedimento:
+
+* Atualizar ROM.
+* Atualizar apps via F-Droid.
+* Atualizar apks manualmente.
+* Alguns apps podem ser auto-autualizáveis.
+
+Arquivos
+--------
+
+Movendo arquivos do sdcard para o armazenamento interno:
+
+    adb shell
+    cd /storage/emulated/0
+    mv /storage/1FAC-34C3/Music/* Music/
+
+Backups
+-------
+
+* [Full Phone Backup without Unlock or … | Samsung Galaxy Nexus](https://forum.xda-developers.com/galaxy-nexus/general/guide-phone-backup-unlock-root-t1420351).
+* [How to use ADB backup to back up your unrooted phone - Pocketables](http://www.pocketables.com/2012/09/how-to-use-adb-backup-to-back-up-your-unrooted-phone.html).
+
+    adb backup -all
+    adb restore backup.ab
+
+Dicas
+-----
+
+* [Hide Certain Files in Android Music Player (or Photo Gallery)](http://www.guidingtech.com/15563/hide-certain-files-android-music-player-photo-gallery/):
+
+    touch /storage/emulated/0/SomeApp/Media/.nomedia
+
+* [Validating the Android 4.2.2 RSA fingerprint](https://shred.zone/cilla/page/374/validating-the-android-422-rsa-fingerprint.html):
+
+    awk '{print $1}' < ~/.android/adbkey.pub | openssl base64 -A -d -a | openssl md5 -c | \
+    awk '{print $2}' | tr '[:lower:]' '[:upper:]'
+
+Referências
+-----------
+
+* [List of custom android firmware](https://en.wikipedia.org/wiki/List_of_custom_Android_firmware).
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