Should I use SAME SCREEN SIZE in Pixels of the Phone and the Canvass in Photoshop (for artworks)?
artlover
Member, PRO Posts: 16
Hi Guys. Good day! Just want to ask a simple question. For example you want to make a Game for iPhone 6 Plus (in portrait for example) 5.5 in or 1920×1080 this is its size in Pixels if I'm not mistaken (kindly correct me if I'm wrong) 
Now, should it be or need to be the same size of the Screen when making Artworks in Photoshop same as 1920×1080 pixels?
Thanks in advanced
Comments
The resolution of the iPhone6+ screen is 1920 x 1080px . . . . but the working size is 2208 x 1242px.
This 2208 x 1242px resolution is downsampled on the device to 1920 x 1080px.
Working to either size should be fine, they are both somewhat compromised by the way the iPhone6+ works, working to 2208px will be compromised by being downsampled on the device - and working to 1920px will be compromised by being (initially) upsampled on the device.
Working to 1920px has the advantage of having much smaller full-screen images due to the way image assets are stored in memory.
2208 x 1242px . . . is stored in a 4096 x 2048px chunk of memory.
1920 x 1080px . . . is stored in a 2048 x 2048px chunk of memory.
Thank You @Socks Now I know the best working size
You're always there to help. Thank you so much and more power 
Yeah, 1920 x 1080px will be fine for full screen images, but there's nothing to stop you working at both size at the same time if you want, for example making your full screen images 1920 x 1080px, and then making your individual elements (characters, coins, balls, clouds, logos . . . or whatever) to the 2208 x 1242px size (of course none of them will actually be this big!).
The advantage here is that the 1920 x 1080px size will keep full screen images within the 2048 x 2048px memory size - and then the individual elements can have x3 image assets, so for example if you have a 120 x 120px actor it will require a 360 x 360px image asset, it just makes things easy when trying to work out image sizes.