When it comes to adding more security to your device, encrypting it is a great way and one of the good things about encrypting your device is that it doesn’t take a lot of work at your end. Encryption isn’t the most perfect form of security but it gets the job done. However, the biggest downside of turning the encryption on is the performance hits you will get on your phone. Things get more serious for power users who like to stress their phones a lot. The performance hits are big enough to have an effect on performance. Luckily, turning off the encryption on Android Lollipop isn’t difficult. You only need a short amount of your time and some knowledge about how Android works.
Before you take any step, we would advise you to keep your phone on charge. Though it is highly unlikely that your phone will drain all the battery during the process, it is still better to be safe than sorry. Next up, you are going to check the encryption state of your phone. Head to Settings > Security and check it. Do know that this is likely to be different for OEMs. But it is mostly found in Security. Once you hit the decrypt button, your phone will restart and the decryption will start. This process usually takes 15-20 minutes and once it’s done, your phone will be booted normally. Just make sure that your phone is on charge throughout the whole process as it is a safe bet. Phones like Nexus 5 will ask you to do a complete factory reset on your phone so make sure your data is backed up.