If you haven’t updated your iPhone to iOS 15, do so now. Any iPhone that can run iOS 14 can also run iOS 15, so there’s no reason to wait any longer to upgrade your handset, and there are some compelling reasons to do it.

While iOS 14 proved a relatively smooth transition for most iPhone users — which incorporated a ton of new features with minimal complaints — iOS 15 solves most of the minor issues encountered in iOS 14. It incorporates all of the great features introduced in the previous generation, including the App Library, videos and FaceTime calls while using other apps, new default apps, unlocking your iPhone via your Apple Watch, enabling smart Siri support for music apps, PlayStation 5 and Xbox controller support, Waze-inspired crowdsourcing in Apple Maps, and much more.

If you don’t receive an automatic iOS update notification, go to Settings > General > Software update to download and install it.

If you are still having issues with the following iOS 14 features, do not hesitate to upgrade to iOS 15 now.

The fingerprint sensor is reported not to be working properly on the iPhone 8. There are also reports from previous releases about the fingerprint sensor as nonfunctional or not responding.

With iOS 14, one of the biggest draws was a new interface for the home screen that features resizable and stackable widgets. Some users were disappointed when they couldn’t modify some widgets at will, and recently downloaded apps may not have widgets available at all.

When typing a message or email, the text is delayed and slow to register on the screen, which is distracting. This has been a longstanding issue.

The Google Authenticator app stopped loading up. You’d tap its icon, the app would begin to load for a split second, and then it would quickly revert to the home screen.

No sound notifications for text messages and the notification banner doesn’t appear at all when the iPhone is locked.

Many iPhone users had been champing at the bit to download the new operating system as soon as it was available but found they had to wait from hours to even a day or two for the initial release to download and install to their phone.

Battery drain is a perpetual issue after the installation of a new mobile OS. That’s because the new system has a lot to integrate and catch up on before the battery will start functioning normally again.

iOS 14 resets the default browser and email client back to Safari and Mail after you power down and then restart. That means you have to reset the defaults to your preferred apps all over again.

Bluetooth connections can often be problematic, so if you can’t connect to your Bluetooth devices after updating, try some of these moves.

Wi-Fi connection problems can be frustrating, and if you’re operating a home Wi-Fi network, here are a few things to try.

This echoes the steps cited for Bluetooth in terms of having your Wi-Fi passwords ready to enter or, if that is unsuccessful, resetting your phone’s network settings.

If you are not getting service on your cellular plan, here are a few things to try even before you pick up your phone. First, check to see if there have been service interruptions in your region. Check local notices, email, TV, radio, or social media, or contact your service provider on social media. Down Detector is a good way to gauge whether others in your area are having the same issues. If not, here’s what to do.

There have been scattered reports that iOS 14 may cause GPS issues, and if that’s the case for you, the first thing to try is to completely shut down your phone and after a few minutes, power it back up again. Or try the following actions.