The new version of iOS 15.3 is a mix between fixes and new bugs. However, it could be very useful, because it brings a large number of security patches that make it almost indispensable. The longer you wait to install it, the more you leave your iPhone open to vulnerabilities.
Still, this new update puts iPhone battery life issues back on the table. Readers have also reported issues with widgets not displaying information correctly, as well as problems syncing Wallet with the Apple Watch. However, the hotspot works reliably again while the iOS 15.2 update had made its operation strange to say the least.
In terms of the bugs encountered, these are not spectacular and do not justify skipping the update. It’s simple: this update doesn’t include anything that could harm your iPhone or prevent you from using it.
Source: ZDNet.com