I use my IPad. I had one of the big credit card companies. What a nightmare, I was being charged such a high rate, a monthly fee and also when I quit they just automatically took $250.00 out of my account! They said I did not uphold to my 2 year contact, which I did! Luckly I had saved all the contracts! Did receive my $250.00 back after 6 months of fighting for it!