All iPhone Models
1) Click a wallpaper you like
2) Right click it and choose "Save Image".
3) Open iTunes and connect your iPhone or iPod
4) Choose the Photos tab on your connected device
5) Select the Folder where your saved the wallpapers to
6) Click Sync to send the wallpapers from the folder onto your device
Android
1) Click a wallpaper
2) Right click it and choose "Save Image"
3) If you have an application for syncing data, open it
3,1) Choose photos, then select the folder where you saved the wallpapers
3,2) Sync to send all the wallpapers onto your phone
4) Plug in your android device
5) Go to Computer
6) Click the phone icon
7) Drag and drop all the wallpapers in the phots folder