The phrase "handset launch" refers to the introduction or release of a new mobile phone or device into the market. It signifies when a company unveils or makes a new handset available for sale and use by consumers. Full definition
As for that rear camera, it doesn't feature two lenses, which is what we expect for all flagship handsets launching in the coming months. (bgr.com)
But after that no such handsets launched by them, something missing. (gogi.in)
Well, here's the thing, it is by far the most popular and powerful camera module and most certainly used in lots of handsets launched last year. (phoneradar.com)