Troubleshoots KDDI

Frequently asked questions about KDDI phones, tablets and watches

Answers to frequently asked questions on KDDI devices. Reasons for a hard reset or reset a KDDI, Is it safe to do a hard reset or format in a KDDI?, What data is deleted when performing a hard reset in a KDDI?, What should I do before doing a hard reset?, Can I install Fortnite on my KDDI?, I forgot the PIN code of my KDDI, I forgot unlock pattern, How to make my KDDI faster?, How to update my KDDI? How to backup my KDDI?