It works pretty well.
Audio quality is good (not as good as LG Exalt LTE which was amazing), better than other flip phones (below).
Interface is pretty nice. Some more advanced features similar to smartphones. Battery life seems good (will need more time to be sure; I usually disable 4G and WiFi). Ringtone volume goes pretty high. Phone feels good in my hand.
Now the flaws:
* Calendar can't set long notification sound. Unusable for important appts like meetings. Can't set custom (longer) notification sound (Exalt LTE allowed this).
* Send txt message makes cute "squeak/chirp" sound that _cannot_ be disabled. I'm sure it will embarrass me at some point. Why did they add this sound??
* text entry mode default cannot be set (defaults to ABC every time you enter a text box). This is very annoying since I am used to Predictive.
* in predictive text entry mode, pressing '4' will give you 'G'. Why? It should give 'I' (common, one letter word. 'G' is not a word). LTE Exalt was smart enough to give me 'I'.
* Can reorganize app icons in menu but can't pull icons out of a group
* Takes 5 seconds after pressing Contacts before you can start typing a name to search. Every time.
I have tried these other phones and would recommend the TCL Flip Pro above these phones.
*Kazuna eTalk - unusable for me since calendar is barely functional. Didn't spend much time evaluating because of this. Didn't find any other major issues.
*Orbic Journey - unusable, many flaws (text messages don't make a sound sometimes, people can't hear my voice on bluetooth, audio quality is not "HD" even though it uses HD calling, calendar has bug where appt shows on different day, etc.)
*Nokia 2720 V (actually, someone else I know has it and you have to position the phone perfectly by your mouth or the other person can't hear you)