In Fallout Shelter, I know that pregnant dwellers will give birth after three hours. In another three hours, the child will grow up, and become a regular dweller.
Can you manually set your clock forward a few hours to bypass this wait, and force the child to grow up?
Best Answer
Yes. Despite being a key game-play mechanic, Fallout Shelter does not do much to prevent you manually changing the clock to exploit timers.
This should apply to a pregnancy timer; However, this exploit is most popular as a means to rush the production timers, or to farm loot/caps from the wasteland.
Keep in mind that there are reports of this exploit breaking the games sense of time, resulting in some greatly over-exaggerated timers. For example, in one particular case, one of our users experienced a permanent 70+ days added to their wasteland exploring and 1000+ days added to their radio.
This particular exploit is also detailed further on the Fallout Wiki.