@Menatlist: As always thank you for your feedback

Start from memory usage: FastSMS uses 6-7% of memory itself, but you have to consider that qtLibraries must be loaded so the total amount is 12-14% (depends on which language are you using). Consider that QtLibs are shared between different apps so they exists only once in memory (tools like Conky give the amount of memory with libs included).
There are some part of old implementation that could be removed freeing memory, but I have to manage people that perhaps want use fastsms standalone and not as vkb.

Icon: if someone wants draw a set of icon I will be happy to change all...They comes from different author and perhaps could be not so intuitive.

Some problems about autorotation happens when device is parallel to ground (for example over a table) this is because orientation is "unknown".

About non-commited text I've only experinced this in microB (like I said in first post) never in other place. Where you get this?