The main highlight is, of course, its foldable display, which allows the phone to be more portable when folded and provides a larger screen when unfolded.
The Samsung Galaxy Z Fold 4 is powered by the Qualcomm Snapdragon 8+ Gen 1 SoC, with support for 16 5G bands in total. This phone supports two physical SIMs, or you can use a single SIM and one eSIM. Wireless protocols include Wi-Fi 6, Bluetooth 5.2, NFC with Samsung Pay, and Ultra-Wideband (UWB). You also get all the expected sensors.
It's definitely a head turner. I've been using it for a week now. And it did heat a lot in first 2days of use. But now this doesn't happen anymore. Battery is not upto the mark but I'm an average user so it lasts a day for me. Charging speed is the biggest drawback as it supports just 15W fast charging which takes approx 2hrs to charge it from 0 to 100.
Build quality is what surprises everyone who holds it. People don't expect it to be very strong, but it actually is. Samsung did an amazing task here. At last it's a beautiful piece of engineering. It feels premium and stylish. You'll just fall in love with it and it'll seek you a lot of attention to be very honest.