When I first got my Product Red iPhone 11, I was disappointed with the improvement in the battery life over the XR (fetl it was actually worse), but after the 13.1.1 update I am rather shocked how much better the battery is now. Phone has been off the charger for 10 hours today and I am still at 76% after my normal usage! Totally impressed! Yesteday was just as good since the update on Friday. I was thinking of returning the 11 and of getting the 11 Pro, but now have decided to save the cash!