First, try not to get too attached to your Android. This can not be stressed enough as it is the absolute most important out of all the steps. Getting attached may feel right at first, but will make separation far more painful for all parties involved later. Despite how you feel about your Android now, the truth is it's highly unlikely you will never get an upgrade.
Secondly, set a lock screen message addressing the new owner of your phone. Try not to make it too bitter sounding, or you will never see your Android again. Leaving your name and address, and times that you are typically at home is not recommended. Instead use something along the lines of, "Please take good care of my Android." Wishing the thief and your ex Android both happiness is a good idea, but you will have to see that message periodically which could lead to separation anxiety or a self fulfilling over the air update.
Third, try to be sensitive to clues that your Android may be about to go missing. If your Android is acting up, freezes giving you the cold shoulder after receiving certain gestures, refuses to listen when you speak to it, suggests things in a mocking way, interrupts you while talking to someone you spend (too much) time with, or just can't make it through the day without a little "boost", these are signs that your relationship with your Android may soon be Terminated.
Additionally, try your best to be a good person. Be aware that your Android is aware of almost everything you do down to the slightest touch or subtle tilt of your head. Thus, mistrust between you and your Android is a sure-fire recipe for disaster. Your android can hear those things you whisper under your breath after ending a call -- it senses how you act towards others you have contacts with. Performing acts of kindness towards others will reduce the chances that your Android will inexplicably leave your company, and can increase the chances of reuniting with your Android after an affair with a thief. If you are reunited after a separation, it will be up to you to decide if you can ever really trust your Android again; Unfortunately, one must beware of viruses...
Finally, if things do not work out with your Android, do not despair. New models with more desirable features and stronger vibration functions will be available soon. Never damage your Android on purpose as this can lead to an immediate break-up, and may cause you harm as well. If you voluntarily end a relationship with an Android, return it to an authorized recycling centre so that it may be refurbished. Remember, if an Android doesn't bring you happiness, it may have been meant for someone else in the first place.