So question. When you say replace with SecContacts and SecPhone - are you telling us to rename the downloaded SecPhone.apk to SecContacts.apk and the downloaded SecContacts.apk to SecPhone.apk? Then switch them out with the files located in the /system/app folder. That's what I am understanding from your post, otherwise it would be completely pointless to put that there. Unless that was a mistake and we just swap out the downloaded files as is with the original /system/app files. Let me know. Thanks for the work, bro.
Devices: At&t Galaxy Note 3 (rooted), Surface Pro 3