- adding more than 20 contacts to the message
- no auto-converting messages to MMS after 4 SMS
- Sent Time instead of Received Time
Custom-Recovery (CWM, TWRP, ...) / root
Preparation / Backup
deodex-ROM | rename /system/app/SecMms.apk > /system/app/SecMms.apk.bak (or delete -> not recommended!)
odex-ROM | rename /system/app/SecMms.apk > /system/app/SecMms.apk.bak + /system/app/SecMms.odex > /system/app/SecMms.odex.bak (or delete -> not recommended!)
After backup boot into recovery and flash your corresponding (firmware) zip-file. Don't reboot, but first wipe dalvik-cache.
Now do a Reboot.