Save/Restore messages features are present in S4 Messaging, but hidden.Good day!
This is my Port S5 Messaging from S5.
Enabling new features (Save messaging, restore messaging and etc...)
Safe mode FIXED!
Installing: CWM
Downloading: http://www.mediafire.com/download/1jg02r9jld516dp/fix+and+mod+S5+MMS+fully+worked.zip
Testing i9500 deodexed (only deodexed) and fully worked!
Patch following function to return 1: Lcom/android/mms/MmsConfig;->getEnableSaveRestoreSDCardMessage()Z
And you don't need to replace whole messenger.