Does discourse support such location feature: newly created topic show location of logging device(mobile or personal computer)?User needn’t choose location manually.

AFAIK no. That would be huge security risk. Good news are MaxMind can’t even do that, though.

נושא חדש שנוצר מוצג מיקום מבוסס על המכשיר

merefield (Robert) 20 בפברואר,‏ 2025,‏ 9:03am 3

I’d consider adding this feature as an option to Discourse Locations plugin if you want to fund it.

נושא		תגובות	צפיות
Locations Plugin :earth_africa: Plugin paid-support	735	78331	2 בספטמבר,‏ 2026
See Recently Used Devices Announcements new-feature	2	2594	3 בנובמבר,‏ 2018
Including user location under their name on topic pages? Support	2	498	15 באפריל,‏ 2020
Visual map of users Feature	15	8245	22 במאי,‏ 2018
GEO Tagging ability for topics Feature	12	4463	7 ביולי,‏ 2016