The Samsung Galaxy A52 5G is the device which mostly resembles the Fairphone 4, as discussed here. Using the comparison by UPPERCASE with slight adjustion gives the best comparison: Compare Samsung Galaxy A52 5G vs. Fairphone 4 - GSMArena.com
Sound
Loudspeaker Yes, with stereo speakers Yes
3.5mm jack Yes No
Body
[…]
IP67 dust/water resistant (up to 1m for 30 mins) IP54, dust and splash protection
MIL-STD-810G compliant
Bold is A52. They were able to achieve IPX67 dust/water resistant with a 3.5mm jack. How come Fairphone wasn’t? I’d like to know. I wish I knew about this before, I’d loved to have asked this question during the Q&A.