32.2.A.0.224 firmware brings STAMINA MODE back to Xperia devices which was earlier removed in initial Marshmallow firmware update by Sony Mobile.
Xperia Z3+ 32.2.A.0.224 Firmware Update
Check out about phone screenshot of 32.2.A.0.224 firmware update for Xperia Z3+.
Xperia Z3+ 32.2.A.0.224 firmware ftf
For DUAL SIM
If you have already updated your device, let us know if you have noticed any other major changes.
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Source – XDA (shared by Quarx, Tantawi)