
Originally Posted by
Kapox
Just use your Gmail adresses. On the new device, set your gmail account and save it (like when you set it to check your e-mail inbox), then open CoC and in the settings use the option "Google+ sign-in " and set the email account you just added (the one you have saved your progress on). In the old device, just do a factory reset, or remove the account from the device. This is only for Android devices. (Remember to first link your progress to a Gmail account, then save it, otherwise, you could lose all your progress).
Hope this can help you (I can explain in spanish if you talk that language).