A: Yes. The ruling of Wudu applies to touching the Arabic script (Mushaf). Since a PDF on a phone or screen is not the physical Mushaf, you can read the Tafsiri without Wudu. However, for respect, it is best to be in a clean state.
A: A full PDF includes all Juz, including Yaseen (Surah 36) and Juz Amma (Surah 78-114). Spiritual Benefits of Reading Quran with Understanding Allah says in Surah Sad, Ayah 29: "(This is) a Book (the Quran) which We have sent down to you, full of blessings, that they may ponder over its Verses, and that men of understanding may remember." download quran tukufu na tafsiri yake pdf full
A: Tarjama is a literal word-for-word translation. Tafsiri (Interpretation) explains the meaning, context, and reasons for revelation. The Quran Tukufu PDF you want includes Tafsiri, not just Tarjama. A: Yes