EnableLock SIM card, found under Settings -> Personal -> Security -> Set up SIM card lock. This will mean that you must enter a PIN number in order to unlock your SIM card each time your phone is switched on, with out the PIN no phone calls can be made.
Set up a Screen Lock, found under Settings -> Personal -> Security -> Screen Lock, which will ensure that a code, pattern or password needs to be entered in order to unlock the screen once it has been locked. We recommended using the PIN or Password option, as these are not restricted by length. You can find more information on creating strong passwords in How to create and maintain secure passwords.
Set the security lock timer, which will automatically lock your phone after a specified time. You can specify a value which suits you, depending on how regularly you are willing to have to unlock your phone.
1.2 Device Encryption
If your device uses Android version 4.0 or newer, you should turn ondevice encryption. This can be done in Settings -> Personal -> Security -> Encryption. Before you can utilise device encryption, however, you will be required to set a screen lock password (described above).
Note: Before starting the encryption process, ensure the phone is fully charged and plugged into a power source.
1.3 Network settings
Turn off Wi-Fi and Bluetooth by default. Ensure that Tethering and Portable Hotspots, under Wireless and Network Settings, are switched off when not in use. Settings -> Wireless & Networks -> More -> Tethering & Mobile hotspot.
If your device supports Near Field Communication (NFC), this will be switched on by default, and so must be switched off manually.
1.4 Location settings
Switch offWireless and GPS location (under Location Services) and mobile data (this can be found under Settings -> Personal -> Location).
Note: Only turn on location settings as you need them. It is important not have these services running by default in the background as it reduces the risk of location tracking, saves battery power and reduces unwanted data streams initiated by applications running in the background or remotely by your mobile carrier.
1.5 Caller Identity
If you want to hide your caller-ID, go to Phone Dialler -> settings -> Additional Settings -> Caller ID -> hide number.
1.6 Software Updates
To ensure that you phone remains secure it is strongly recommended to keep your software updated. There are two types of updates that need to be checked:
The phone operating system: go to: settings -> About phone -> updates -> check for updates.
Apps you have installed: Open the Play store app, from the side menu select My Apps.
Note: When updating your phones software it is important to do it from a trusted location such as your internet connection at home instead of somewhere like an internet cafe or coffee shop.
License: FOSS (GPLv3) / Requirements: Android 1.6 and up.
Details: Is an Instant Messaging client that lets you organize and manage your different Instant Messaging (IM) accounts using a single interface. It will also attempt to encrypt your conversations using OTR when chatting with contacts who also use IM clients that support OTR.
License: FOSS (GPL v3) / Requirements: Varies by device.
Details: is a free camera application for Android devices that has the ability to recognize and hide faces. It allows you to blur or delete the faces of those you photograph in order to protect their identities.
License: Freeware (GPL v3) / Requirements: Android 2.3 and up.
Details: is an app to send encrypted text messages (SMS) via your phone provider and encrypted messages over WiFi and your phones internet connection as well as storing all SMS and messages in an encrypted container on your phone.
License: Proprietary / Requirements: Dependant on device.
Details: is a file synchronisation tool that will allow you to easily share files between your computers and Android devices via an intermediary 3rd party server on the internet. All files are encrypted by the app before being uploaded to the Spideroak servers.
License: FOSS (Apache v2) / Requirements: Android 3.0 and up.
Details: lets you to change your Android disk encryption password meaning you can have a one passphrase to decrypt the phone when you turn it on and a different one to unlock the phone during normal use.
Details: is an Android app that collects and analyses mobile radio data to make you aware of your mobile network security and to warn you about threats like fake base stations (IMSI catchers), user tracking and over-the-air updates.
License: FOSS (GPL v3) / Requirements: Android 4.0.3 and up.
Details: is an app that will prevent your Android device from leaking sensitive information (such as your phone number, contacts, location, etc) to other installed apps on your phone. While x-privacy is free, there is a Pro version that can be purchased, which allows you to download restriction rules rather than you having to make them your self.