qur'an on the phone

Q: I had a question regarding whether or not one is allowed to read the Qur'an through his phone without wudu? I have the PDF version of the Qur'an on my laptop and I wanted to read it in school. I don't have wudhu all the time so is it possible if I can read the Qur'an through my laptop or phone without wudhu, or is compulsory to have wudhu?

Q: People recite the Qur'an from the phone and watch YouTube or movie on the same phone. So is it right to download the Qur'an on the mobile phone?

Q: I have a Qur'an application on my phone. At times my wudu just won't last. Wind problem. So I end up reading with no wudhu. I turn the pages on the screen with my finger (my finger is wrapped in a piece of cloth). Is this permissible.

Q: Can I touch the Qur'an on the phone without wudhu?