Pada tanggal 14 Agustus, single digital pertama (G)I-DLE, "[[Hann (Alone)]]", dirilis.<ref>{{Cite web|url=http://www.tvreport.co.kr/?c=news&m=newsview&idx=1073007|script-title=ko:[뮤직]@리폿열애설 불구 컴백강행...(여자)아이들, 관심일까 무리일까|website=TV Report|language=ko|access-date=August 11, 2018}}</ref><ref>{{Cite web|url=http://m.mydaily.co.kr/new/read.php?newsid=201808091331722903|script-title=ko:(여자)아이들, 이번엔 성숙함으로 승부수|website=My Daily|language=ko|access-date=August 11, 2018}}</ref> Dalam 24 jam, video musik melampaui 4,9 juta tampilan di YouTube.<ref name=":0">{{Cite web|url=https://www.youtube.com/channel/UCtCiO5t2voB14CmZKTkIzPQ/search?query=(%EC%97%AC%EC%9E%90)%EC%95%84%EC%9D%B4%EB%93%A4|title=Dingo Music Search_여자(아이들)|website=YouTube|language=en|access-date=June 9, 2018}}</ref> "Hann" menduduki puncak tangga musik domestik termasuk Bugs, [[Genie Music|Genie]] dan Olleh Music pada 16 Agustus <ref>{{Cite web|url=https://m.entertain.naver.com/read?oid=112&aid=0003061935|script-title=ko:[팝업뮤직](여자)아이들 '한', 음원차트 3곳 1위...올해의 핫루키 |website=Heraldpop|language=ko|access-date=August 16, 2018}}</ref> dan mencapai puncak baru di ''[[World Digital Song Sales | World Digital Song Sales Chart ]]'' ''[[Billboard (majalah)|Billboard]]'' di mana mereka debut di No. 2.<ref>{{cite news|url=https://www.billboard.com/amp/articles/columns/k-town/8472205/g-i-dle-hann-alone-new-peak-world-digital-song-sales-chart|title= (G)I-dle Hit New Peak on World Digital Song Sales Chart With 'Hann (Alone)'|date=August 28, 2018}}</ref> Mereka menerima kemenangan pertunjukan musik pertama mereka di [[Show Champion]] pada tanggal 29 Agustus untuk "Hann".<ref name="SPOTVNEWS:뮤직 (여자)아이들, '한'으로 1위...확실히 증명한 실력">{{Cite news|url=http://m.spotvnews.co.kr/?mod=news&act=articleView&idxno=233916#Redyho|script-title=ko:[뮤직] (여자)아이들, '한'으로 1위...확실히 증명한 실력|work=SportsTvNews|access-date=August 30, 2018|language=ko}}</ref> Pada bulan September, grup ini tampil pertama kali di f>{{Cite news|url=https://www.thairath.co.th/entertain/inter/1387954|script-title=th:koสนุกจนไม่อยากให้จบ! KCON 2018 THAILAND จัดเต็มอิมแพ็คแทบแตก|work=Thai Rath|access-date=November 7, 2019|language=ko}}</ref> ▼
Album tunggal 2020 mereka, '' [[Dumdi Dumdi]] '' memecahkan rekor penjualan album tunggal, menjadikannya album tunggal grup wanita terlaris kedua sepanjang masa.<ref>{{cite web|url=https://www.hankyung.com/entertainment/article/202008113993I|script-title=ko:(여자)아이들, 싱글 '덤디덤디' 초동 9만 4천 장 돌파…역대 걸그룹 싱글 2위|trans-title=(G)I-dle, 'Dumdi Dumdi' exceeded 94,000 copies in the first week... Girl group single album ranked 2nd|work=[[Korea Economic Daily]]|author=Lee Joon-Hyun|date=August 11, 2020}}</ref> (G)I-DLE juga menjadi grup K-pop pertama yang diwawancarai oleh [[Forbes | Forbes China]].<ref name="Forbes China">{{cite web|script-title=ko:(여자)아이들, K-POP 그룹 최초 中 포브스와 인터뷰 진행|trans-title=(G)I-dle, the first K-POP group to conduct an interview with Forbes in China|url=http://www.stardailynews.co.kr/news/articleView.html?idxno=279706|work=Star Daily News|author=Cheon Seol-hwa|date=August 27, 2020}}</ref>
▲Pada tanggal 14 Agustus, single digital pertama (G)I-DLE, "[[Hann (Alone)]]", dirilis.<ref>{{Cite web|url=http://www.tvreport.co.kr/?c=news&m=newsview&idx=1073007|script-title=ko:[뮤직]@리폿열애설 불구 컴백강행...(여자)아이들, 관심일까 무리일까|website=TV Report|language=ko|access-date=August 11, 2018}}</ref><ref>{{Cite web|url=http://m.mydaily.co.kr/new/read.php?newsid=201808091331722903|script-title=ko:(여자)아이들, 이번엔 성숙함으로 승부수|website=My Daily|language=ko|access-date=August 11, 2018}}</ref> Dalam 24 jam, video musik melampaui 4,9 juta tampilan di YouTube.<ref name=":0">{{Cite web|url=https://www.youtube.com/channel/UCtCiO5t2voB14CmZKTkIzPQ/search?query=(%EC%97%AC%EC%9E%90)%EC%95%84%EC%9D%B4%EB%93%A4|title=Dingo Music Search_여자(아이들)|website=YouTube|language=en|access-date=June 9, 2018}}</ref> "Hann" menduduki puncak tangga musik domestik termasuk Bugs, [[Genie Music|Genie]] dan Olleh Music pada 16 Agustus <ref>{{Cite web|url=https://m.entertain.naver.com/read?oid=112&aid=0003061935|script-title=ko:[팝업뮤직](여자)아이들 '한', 음원차트 3곳 1위...올해의 핫루키 |website=Heraldpop|language=ko|access-date=August 16, 2018}}</ref> dan mencapai puncak baru di ''[[World Digital Song Sales | World Digital Song Sales Chart ]]'' ''[[Billboard (majalah)|Billboard]]'' di mana mereka debut di No. 2.<ref>{{cite news|url=https://www.billboard.com/amp/articles/columns/k-town/8472205/g-i-dle-hann-alone-new-peak-world-digital-song-sales-chart|title= (G)I-dle Hit New Peak on World Digital Song Sales Chart With 'Hann (Alone)'|date=August 28, 2018}}</ref> Mereka menerima kemenangan pertunjukan musik pertama mereka di [[Show Champion]] pada tanggal 29 Agustus untuk "Hann".<ref name="SPOTVNEWS:뮤직 (여자)아이들, '한'으로 1위...확실히 증명한 실력">{{Cite news|url=http://m.spotvnews.co.kr/?mod=news&act=articleView&idxno=233916#Redyho|script-title=ko:[뮤직] (여자)아이들, '한'으로 1위...확실히 증명한 실력|work=SportsTvNews|access-date=August 30, 2018|language=ko}}</ref> Pada bulan September, grup ini tampil pertama kali di f>{{Cite news|url=https://www.thairath.co.th/entertain/inter/1387954|script-title=th:koสนุกจนไม่อยากให้จบ! KCON 2018 THAILAND จัดเต็มอิมแพ็คแทบแตก|work=Thai Rath|access-date=November 7, 2019|language=ko}}</ref>
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