I haven't checked the code but it seems like most of the features of desktop version are there.
(Fingers Crossed)
Update: Version 4.4.0 just got released.
The new GUI looks good and smooth; however, the feature that we're expecting to manually edit the fee or fee rate still isn't there.
Guess you're stuck with 'Static 'slider's 1, 2, 5 ,10 ,20... sat/vB pre-loaded fee rates.
I am still surprised that coin control can be used on some mobile wallet, but not still on mobile Electrum, or is there anything like coin control yet on mobile Electrum? Only what I saw is still freezing of addresses.
What I noticed about the new version is how it now shows the derivation path of both receiving and change address, not showing the private key of the addresses again.
I checked if the fee can be customized or edited, nothing changed, it was like before as you commented. The most changes is in the UI and layout which is better than before.
The static fee slider is kind of helpful and may be the reason electrum developers are not yet ready to make the fee to be customizable, but as the fee is increase the bigger the range. I hope that Electrum will make customizing the fee possible one day in an update.