@@vishalkumar040393 It really depends on you and the apps you need. For many years, I was able to survive with just Ubuntu Touch but for the past years, I have an Android phone as my secondary.
You can see all apps here: open-store.io Yes, Ubuntu Touch is my main phone since 2015 however I have an Android phone as my secondary since a few years ago. It's good enough based on my use case and willingness to compromise in many things. It's definitely not for 99% of the people since you won't have access to many apps and conveniences of using mainstream and well supported products. There is Waydroid for Android apps but it drains the batter since you're basically running another OS. Compatibility could also be an issue especially with apps that need DRMs, SafetyNet, etc.