Lol you seriously returned it after one day of use? It takes about a week for the battery to ne optimized to your usage.Returned mine today, first day i take it to work, battery is at 99 when i leave for work at 1130am, by 330 sitting on my desk with all apps closed its at 69 percent. suffered a few lags and freezes, oh well ill go back to my 11 pro max and wait for pixel 5