Sonys Press conference from MWC took place end of February
If you missed it you can watch it here.
Please join the discussion here and share your thoughts on what was anounced here.
MWC 2019 discussion.
Have you restarted your phone? That is always a good start, just to make sure that nothing is stuck in the background and is consuming CPU power.
Make sure that you have some storage free on the internal storage, at least 500 MB, as the device will slow down a bit if the internal storage is completely full since cached data and so on can't be saved. You can see how much free storage you can have in Settings > Storage.