Depende sa paggamit ng phone yan. Pag mahilig ka mag games saka nood ng youtube o mag facebook using your wifi or data mabilis yan mag dadrain yung battery. Its depend how you use it.
For everyone's info, the 2X battery lifespan app does not "double" the screen on time of your device while being used. What it does is preserve your battery so that it will last the maximum lifetime possible without reducing the capacity by minimizing the consumption of the lithium ions' charge cycles.
As such you may experience somewhat shortened everyday battery life depending on your usage. This is due to the phone deliberately preventing ng the battery from being drained or topped-off too much, keeping the voltage inside within the optimal values.