Inconsistent problem with Android

I have a very strange problem.

I have an xml file of four data structures: A with data and collection of B. B with data and collection of C. C with data and collection of D. D with data.

Collection is made by providing an ID of upper structure in each structure. I.e. D has an ID of one C.

So I parse this xml file and store all the data in the SQLite database. Afterwards I load all the data from database and make objects (accordingly to A B C D structures)

At some point of execution I need to find specific object D of an object A. Which means: I need to find specific object B of a given object A. I filter all Bs and find the right B. Then I filter Cs of that B and find the right C. After that I filter Ds of that C and find what I need.

To make a more clear picture of what is this all about: I have a location with specific date (starting from January 1st and ending at December 31) intervals where every date interval has specific day intervals (00:00 - 23:59) and each day interval have messages which needs to be presented. That forms my A B C D structure.

At this point I don't believe I have written some kind of buggy code because everything is pretty simple: Parsing xml, saving data in the tables, loading data f开发者_如何学Gorom database and creating objects.

But, when I test my application on different phones, on some of the phones I miss some data. I.e. it works great on HTC Magic 1.5, but gives no results on SGS 2.3.3. I don't know how many times I checked everything and can't find the error. And of course I tried cleaning/rebuilding my project many times. It just seems that it's related to different versions of Android platform.

Any idea where I should look for problems in my application? Is there something regarding platform implementation that I should be aware of? Any help would be appreciated!

I guess the summary of this problem would be a question like this: Why my data exists on one phone and doesn't exist on another one?