I don't use a smartphone (just my Mac) -- but there are lots of astronomy apps out there for them. Here's an April, 2020 webpage that discusses 16 phone apps:
16 Best Astronomy Apps For Stargazing | Android & iOS | 2020 Edition
#8, Sky Safari is for both Android and IOS. It looks a lot like Stellarium -- with its ground-based viewpoint:
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Most of the apps are OS-specific -- so, if you tell me whether your phone is iOS or Android, I can probably suggest a couple more. Many appear to be free, and the most expensive (a highly-specialized telescope-guiding tool) is $14.95.
Let me know if I can be of further help...
TXnMA
I have an Iphone - I can see some good apps right there! thanks!