I bought one in June 2018 due to a shill on a forum who bragged about the quality and a Amazon Deal of the Day. (You know who you are!) I thought the video quality and color were excellent, but most everything else was poor due to the software. I agree the “Hello Ding Ding Pai” greeting is annoying, not to mention makes no sense. Just imagine your iPhone loudly saying “Hello Apple” every time you unlock it. Plus it becomes very distracting each time you get into the car with passengers or are focused on other tasks like setting navigation or music. After a couple days, the camera stopped turning on automatically. DDpai offered to send a direct wire connection, but after 5 days the camera stopped working altogether, so I returned it. My biggest complaint, however, is the shill used to promote the product on Amazon and the fake reviews to bolster support for it. Each of the three listings on Amazon for the Mini3 showed old customer pics, old Q&A and old positive reviews for the older Mini2 product. These made it appear there were many sales and great feedback for the Mini3, while diluting all of the negative comments.
1, It is actually super cost-effecive if bought via Amazon lightning deal;
2, "Hello DDPai" is indeed annoying, but luckily it can be turned off via APP settings;
3, If product hardware problem, you could either return it to Amazon or contact the seller for help;
4, Regarding your biggest complaint:
1), DDPai themselves sold mini2 before and then they stopped selling mini2 and I am now the exclusive dealer of mini2 and mini2P, I use my independent listings to sell both;
2), Then DDPai themselves modified all of their previous listings to sell mini3, I personally think this is not a good strategy;
3), But if you check carefully, you will see that there is basically no negative reviews about the image quality of mini3;
4), However, regarding image mosaic of mini3 when in too much details, I am 100% sure that DDPai will release new firmware to solve this, the current delay is mainly because Chinese spring festival.
5), the main negative reviews are actually from previous DDPai mini2, the main complaints are 2: 1), android APP can't be connected with the camera; 2), android APP's permissions, luckily both problems are solved already, at present DDPai android APP no longer needs "phone" & “SMS" permissions.