Verykool R623 - Manual (Page 20)

18 Maintenance Guideline
Welcome to use R623. If there is a problem when you using the
phone, please contact with the vender or consult the local
maintenance center. If your mobile phone is in need of repair, you
can take your phone to local maintenance center, if there is no local
maintenance center, please pass your phone and the purchasing
invoice to the vendor.
16