Android O: identify battery sucking apps

Source: Android O: How to Identify and Bitch Slap Those Battery Sucking Apps
On my Oneplus 5T, Android 8.1:

List apps. running in background permanently

• Settings > Dev. Options > Running Services 

Kill the background activity of an app.

• Settings > Apps > Application list > Select app > Battery > Uncheck Background activity

HTC Pico/Explorer: Extend external memory after CM10.2 install

Use this link to download MiniTool Partition Wizard Home Edition

http://download.cnet.com/MiniTool-Partition-Wizard-Home-Edition/3000-2094_4-10962200.html?part=dl-6285158&subj=dl&tag=button

1. Connect your SD card to PC through USB mode
2. Run the downloaded file (pwhe8.exe)
3. Select your SD card 2nd partition and right click to select DELETE option
4. Again select your 2nd partition (unallocated space at this moment) and right click to select CREATE option
5. Select partition type as ext4 and drive as primary (Not logical) from popup window
6. At last select the apply button from tool bar (first button)

Done - you created a EXT4 partition

 Then install Mounts2Sd from Google Play, then
1. After installing the app, open it and allow root access
2. Configure install script
3. Enable applications, data , cache, etc.
4. Reboot

Exit AirDroid

Disconnect, then press Back, and the application will ask if you want to exit

Disable 3G on Android

• Open dialer
• Dial *#*#4636#*#*
• Tap 'Phone Information'
• Press Menu button
• Tap on More
• Tap Disable data connection
• Tap Disable data on boot