Android

 Android  is an open source operating system for mobile devices (AOSP) combined with a set of proprietary cloud services provided by Google, which some use to post to their IndieWeb sites.

See:
 * Posting from mobile devices

IndieWeb Examples
Community members using Android to post to their personal sites and how.

Ryan Barrett
posts to his site snarfed.org using his Android device
 * See Easy IndieWeb interactions on Android for details

Ben Roberts
posts to his site ben.thatmustbe.me using his Android device with a mobile web app that allows for micropub posting via MobilePub. The URL for the app can be logged into at https://ben.thatmustbe.me/mobilepub/

David Shanske
wants to post to his site using his Android device with a native Android app for Micropub, but none exists. As a compromise, he is using HTTP Shortcuts which is a surprisingly customizable way to do GET/POST on Android, with configurable variables, sharing, dialog boxes, etc. It's a bit cumbersome to set up, but it can take the place of a Micropub app. He has created a simple API to do this.

Jacky Alcine
uses Indigenous to post to his website.

...

 * please add yourself if you use Android to post to your site.

Projects

 * Indigenous is a Java -based Android project that allows you to interact with your site from your phone.

Xavier malware

 * 2017-06-16 Newly discovered Android malware Xavier clandestinely steals your data "…a Trojan dubbed Xavier, which is embedded in more than 800 applications on Android’s app store, clandestinely steals and leaks personal data…"

Forced Location Tracking
2017-11-12 Google collects Android users’ locations even when location services are disabled "Since the beginning of 2017, Android phones have been collecting the addresses of nearby cellular towers—even when location services are disabled—and sending that data back to Google."
 * via https://twitter.com/wiretapped/status/933334648654123008

2018-01-24 Google can still use Bluetooth to track your Android phone when Bluetooth is turned off "A Quartz investigation found that a user can turn Bluetooth off on their smartphone running Google’s Android software, and the phone will continue to use Bluetooth to collect location-related data and transmit that data to Google."

And perhaps not completely forced, but certainly heavily pressured (many apps request Location History and make it seem like they won't function otherwise - or maybe they actually won't!)

2018-01-24 If you’re using an Android phone, Google may be tracking every move you make "phones using Android begin silently transmitting data back to the servers of Google, including everything from GPS coordinates to nearby wifi networks, barometric pressure, and even a guess at the phone-holder’s current activity [...] activating Location History is subtly baked into setup for apps like Google Maps, Photos, the Google Assistant, and the primary Google app."