Step 1 : Open Settings App.
Step 2 : Go to Apps from the Column on left.
Step 3 : Select Defaults apps.
Step 4 : Go through the list of apps and select the browser you want to set as the default browser.
Step 5 : Select each file type and click the options button.
Step 6 : Select Switch Anyway.
Step 7 : Select the browser you want to use from the list.
Step 8 : Repeat this for all file types,protocols,and links that a browser handles.
Step 9 : For unallocated file types,click the choose a default option.
Step 10 : Select the browser you want to use.