There are few solutions of clearing out Cache for iPhone or iPad
but I have found that many people struggling to find it without
restarting device so, I thought of writing blog. Following is step
through.
1. Go to Settings
2. Then go down and go to Safari
3. Then go down and see options Clear Cookie and Data as in below
Image

4. Now go back to your safari and you are done!
If you have any more question comment below.