Bible Gateway Online Bible: https://www.biblegateway.com/
Go to your App store and download Bible Gateway on your phone.
Blue Letter Bible : https://www.blueletterbible.org/
Blue Letter Bible is a great study tool. You can use it for bible, dictionary, and commentaries. https://www.blueletterbible.org/study.cfm
Go to your App store and download Blue Letter Bible.
Thru The Bible: http://ttb.org
Dr. J. Vernon McGee has many usefull study tools such as:
Free Booklets: http://ttb.org/resources/electronic-booklets