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