I'm still using my TD2. In the beginning I wasn't that satisfied (especially with the UI of the calling software itself), but I got used to it as a whole. It's a pity that there isn't any development nor a big community left. Anyway, I run into two issues lately, no big ones anyway.
Camera: I just reached 999 images. But even as the counter in the filename has 4 digits (example: IMAG0992.jpg), when reaching 0999, the mobile didn't use 1000 as next number, but did search for breaks in the numbering (when I maybe deleted a few images) and used these numbers. Another similar issue occurred some time ago, when the mobile didn't find the SD-card, it then saved the images on the main memory in the dcim-folder there, but used a different name: IMAGE_445.jpg. That's a bit strange. The first issue is bugging me more anyways.
Handling of flash-SMS (or something like this): Lately I was at holiday in Poland, and I bought a prepaid-SIM-card (Tak tak). But when I tried to retrieve the balance with something like *100#, I got an flash-SMS, which offered several options (1, 2, 3,...). This SMS just did look like a menu. I'm not sure, but it looked like I would have to choose one of these options at this state, but I couldn't bring up the keyboard. But I may have misunderstood something, since I couldn't understand the polish texts for these options, maybe there were also some instructions what to do, if not pressing these numbers immediately.
Voicerecorder: As I mentioned some postings above, I installed a few alternative voice recorders and did not run into any problems anymore, though that I did not use it that often anymore.