Been waiting for someone to start a good mobile search in pictures. Hurray, Yandex, mastered the first -
m.images.yandex.ru ! The beauty of the new service is that it automatically resizes the found images to the screen resolution of the mobile phone. Now in three clicks you can change the picture on the desktop - at least once per hour. Well, of course, saving traffic :)
In my opinion, this is the right approach - to adapt the content to the device to which it is transmitted. Hopefully, in the near future, many mobile services (Yandex and not only) will develop in this direction.
And this is how it looks on the iPhone:
')

UPD. Thanks to the comments, the address
m.ya.ru/images also works.