Is it proper also for someone traveling by car, who has to stop on the road to daven (pray) a Tefila, to turn on the image of the Kotel on his phone or screen and daven in front of it to increase his Kavanah and intention?
A. As mentioned above, if the images involve the full presence of the people attending the Kotel, there may be many severe issues to avoid.
However, if it only presents the upper part of the Kotel, it would be permitted if it indeed increases the Kavanah and proper intention of the Tefila recited.