No Move to SD Card or Move to USB option in android 4.2.2

I have a Carbonn Phone (model: A18+) http://www.karbonnmobiles.com/karbonn-A18+-proid-193.html Android Version is 4.2.2 Under Settings -> Storage -> 'Preferred install location' and it has three options for it: 1. Internal device storage 2. Phone storage 3. Let the system decide there is no option for "External storage device" but below Preferred install location there is another option: Settings -> Storage -> "Default Write Disk" and it has two options: 1. Phone storage 2. SD Card I have "SD Card" selected here But I don't have choice to choose SD Card or External storage to install apps and when I install any app from 'play store' that goes to either to phone or to internal storage. Even after going to the Settings -> Apps -> I only see 4 tabs Downloaded | Phone Storage | Running | All there is no 'SD Card' or 'USB Storage' tab and when i tap any app here it only shows "Move to Phone storage" or "Move to Internal Storage" on 'App Info' Screen. My question is How can I move or install apps to External SD Card. I have tried many apps like APP2SD or similar ones. But no app gives me to move apps to SD Card. Even I have tried rooting my phone, that also doesn't work.