MyPhone manufactures their phones in their factory in China. They also customize the firmware with Pinoy content.

Cherry Mobile, afaik, relabels phones from various manufacturers. That is why their product range varies significantly in terms of features, specs, and quality. Even the batteries and chargers have different designs and build. So while some of their models provide value for money, some others are not as attractive.

But that is not to say MyPhone models have the same quality across the board. While I find the Q21 Duo impressive (for its price) I do find the cheaper Q22 Duo way inferior in terms of build finish.

In term of firmware, practically all the China-made "generic" phones these days use chipsets from Mediatek, which also provides the operating system. Hence the software and user-interface are more or less similar. MyPhone tries to distinguish their models by adding localized contents for Pinoy users.