It introduced 5G but with a reduced battery capacity...I truly regret “upgrading” to the 12 Pro Max because it was less comfortable in the hand and that first gen 5G modem was a total battery hog.
The best 4G no-home button with 3D Touch is iPhone XS Max while 4G no-home button no 3D Touch is iPhone 11 Pro Max
The contenders for 5G iPhone with great battery life are the iPhone 13 Pro Max, iPhone 14 Pro Max, iPhone 15 Pro Max