How can i improve the sound of Iphone 11?


I am using SE846 earphones into Ibasso DX90 and i love the sound. I recently bought TIDAL for streaming at home. 
I tried listened to TIDAL through my iphone 11 into SE846 and obviously, with no DAC in it, it was not as good as when using DX90. 

There are times i cannot carry the DX90 but will have my phone with me.

Is there a dongle i can put between the Iphone and SE846 that will improve the sound to match that of my DX90?
epz
Im also using the SE846 direct to my iphone. The sound sounded “dead” without the Audioquest Dragonfly Cobalt. Sounds perfect with it. I also use the Lavricables pure silver lightning to usb A adaptor. It gives that effortless air in the sound. 
I have a Dragonfly Black with the Jitterbug and it improves the sound of all phones I've tried it with. The Red or Cobalt are probably even better. I also have an iFi Nano but it sounds about the same, it is just much bigger and hard to carry.
I have a PS Audio Dectet conditioner and I've been happy with it so far. It also helps with power surges. 
I know you have an Apple but what I did for my Android was install UAPP app. There is also an app within that app for a "Bit Perfect" app. Then you use an OTG USB cable. 

The UAPP makes the Android's DAC better. Perhaps there is a similar app for an Apple phone?