Performance
All 3 phones share the same processor, the Snapdragon 8 Gen 1.
The S22 and S22 Plus both have 8GB RAM and storage options of 128GB and 256GB.
The S22 Ultra, on the other hand, is available with 8 GB and 12 GB RAM and 128 GB of storage for the 8 GB model and 256 GB, 512 GB and 1 TB for the 12 GB model. We'd opt for the 12 GB option if you want good storage management in the long run.
In terms of everyday performance use, the S22 Ultra performs the best and offers solid performance. It ran multiple apps seamlessly, without the expected lags or lag. The phone ran YouTube/Netflix and multi-gigabyte games without issue.
As for battery life, the S22's battery has a smaller capacity of 3,700 mAh compared to its previous capacity of 4,000 mAh on the S21. The battery life averaged almost 8 hours, which is honestly not great, but also not a cause for concern if you aren't a frequent phone user or have a charger nearby most of the time.
The S22 Plus also has a 300 mAh lower battery capacity. Fortunately, the reduction in battery capacity doesn't significantly affect battery performance on both the S22 and S22 Plus, as the new models only last 10 minutes less than the previous S21 series models. Considering the prices of these phones, however, we'd have liked to see a more impressive battery life.
On the other hand, the S22 Ultra has a battery capacity of 5,000 mAh, which lasts over 14-15 hours. Both the S22 Plus and S22 Ultra support the fast charging feature, which is especially handy when travelling and using the phone heavily.