HTC One A9 - Use Power Saver Mode; Use Extreme Power Saving Mode

Settings 234
Turn Battery Optimization Off in Apps
Ifthereareappsthatyoudon'twantbatteryoptimizationenabled,youcanturnthefeatureoffin
thoseapps.
1.
Tap > > Settings.
2. TapPower.
3. TapBattery optimization.
4. TapNot optimized>All appstoseethecompletelistofapps.
5. Toturnoffbatteryoptimizationinanapp,taptheappname,andthentapDon't optimize>
Done.
6. Repeatthisprocesstoturnoffoptimizationinotherapps.
Note:Tofilterthelistandseewhichappshavebatteryoptimizationdisabled,tapAll apps>Not
optimized.
Use Power Saver Mode
Powersavermodehelpstoincreasebatterylife.Itreducestheusageofphonefeaturesthatdrain
thebatterysuchasthedisplayanddataconnection.
1.
Tap > > Settings.
2. TapPower.
3. TapthePower saverOn/OffswitchtoturnPowersavermodeonoroff.
Tosetwhentoautomaticallyswitchthismodeon,tapPower saver>Turn on automatically,and
thenselectabatterylevel.
Use Extreme Power Saving Mode
Intimeswhenyoudon’tneedtousemuchofyourphone,turnExtremepowersavingmodeonto
extendbatterylifelonger.Inthismode,standbytimecanlastlongerthanusual,andyoucanonlyuse
themostbasicfunctionssuchasphonecalls,textmessaging,andemail.
1.
Tap > > Settings.
2. TapPower.
3. TaptheExtreme power saving modeOn/OffswitchtoturnExtremepowersavermodeonor
off.
Ifyouwanttosetwhentoautomaticallyswitchthismodeon,tapExtreme power saving mode
andselectabatterylevel.