Umbau-Modus (Mobile)
The Reconstruction Mode is the easy and comfortable way to re-arrange all the buildings in your city. This function will be unlocked with the Iron Age technologie Mathematics.
In order to open the Reconstruction Mode, click on the build menu and then on the Reconstruct button 
on top.
A new menu will open, which opens you an easier way to move your buildings or re-arrange your city from scratch.
On the right side of your window you have a strip button:
Click on the strip button 
to activate the strip mode. Now you can temporarily stash all the buildings in your city. To stash multiple buildings, just swipe over the buildings.
All the buildings will be put in the Reconstruction Menu on the right side.
After stashing all the buildings you want to re-arrange, you can now build them again from the Reconstruction Menu on the right. This works the same, as from the normal building menu.
Select the building you want and place it on the desired spot in your city.
To save your progress you need to place all buildings again in your city, otherwise it won't work. If you want to revert all changes and restore your originall city, just click on the red 'revert' button 
.
While being in the Reconstruction Mode the timers of the buildings are running normally and will not be paused. Also the Set Buildings timer will not be reset, if you move them in the Reconstruction Mode. Other players will still see your 'old' city until you save your changes and can motivate and polivate your buildings.
Currently it's not possible to place buildings from your inventory, while being in the Reconstructions Mode, nor deleting or stashing buildings you don't need anymore. This still needs to be done outside of the Reconstruction Mode.