ANDROID BATTERY SAVER SYSTEM APPLICATION Abstract The android battery saver system application was investigated in this study. For this study, the survey method was mostly used. This design was chosen because it makes finding relative incidence easier. Data was collected from 76 persons in Calabar using a questionnaire. Data analysis and processing were ongoing, and statistical analysis was to be carried out using SPSS version 20, with emergent difficulties being identified and reported in tables. It was discovered that sending a text message, sending/receiving email over a mobile network, and sending/receiving email over Wi-Fi consumed the most energy on an Android phone. The findings revealed that while the majority of Android phones give good location accuracy, they also use a lot of battery power every 5 seconds. Some were set to default, which gives a better mix of battery life and location accuracy 1 minute intervals. Others have higher battery efficiency but a lower location accuracy every 30 minutes. Avira Optimizer - Cleaner and Battery Saver, Avast Cleanup: Cleaner, Speed Booster, RAM, and AccuBattery - Battery Saver were all found on the Android phones.