Al-Quran recitation is excellent during Haji, especially at Arafah and during nights in Mina; during tawaf, scholars differ but doa and dhikr are generally prioritized.
Al-Quran recitation is one of the greatest acts of worship and is particularly meritorious during the blessed days of Haji. Nabi (shallallahu alaihi wa sallam) said: 'There are no days in which righteous deeds are more beloved to Allah than the first ten days of Dzulhijjah' (Bukhari), and Al-Quran recitation is among the most virtuous deeds.
During tawaf, scholars have differed: the Shafi'i and Hanbali scholars generally prefer that the jamaah haji focus on doa and specific tawaf adhkar rather than Al-Quran recitation during tawaf itself, while the Hanafi and Maliki schools permit it and consider it praiseworthy. If you choose to recite Al-Quran during tawaf, it is boleh to read from a mushaf or phone app. The best times for extended Al-Quran recitation during Haji are: the night spent in Mina before Arafah (a calm night ideal for reflection), the time at Arafah (between doa-doa), the nights of Tashreeq in Mina, and any quiet moments in your hotel. Focus on quality over quantity — recite slowly, contemplate the meanings, and let the words move your heart.
Source: Sahih al-Bukhari; al-Nawawi, al-Adhkar; Ibn al-Qayyim, Zad al-Ma'ad