The Pixel 3 and Pixel 3 XL will be launching on Thursday, 1st November 2018.
The Pixel 3/3 XL will be available in three colors, Clearly White (White), Just Black (Black), and Not Pink (Pink). For each color and model, it is available in either 64GB or 128GB.
The iPhone XS and iPhone XS Max will be launching on Friday, 21st September 2018 while the cheaper iPhone XR will be launching end of next month on Friday, 26th October 2018.
With regards to LTE networks in Singapore, for the iPhone XS model we are getting the A2097 and for the iPhone XS Max model, we are getting the A2101.