Why can't phones be stacked on top of each other?

Bad habits like using your phone while lying down until you fall asleep can have various unwanted negative impacts. Minor issues such as charging your phone while lying down, falling asleep with your phone under a pillow/body, and so on, can have fatal consequences for both the user and the smartphone itself.

 

Placing your phone carelessly, like on the floor, and not ensuring the proper handling of the phone during delivery through online courier services, etc., can also lead to phone damage. For example, being stepped on, bumped, thrown, or even being squished due to heavy objects during the delivery process. 

Poor packaging of the phone, not wrapped in bubble wrap, wood, and other hard protectors, can risk causing the phone to break and be damaged irregularly. So, when phones are stacked, it can lead to phone damage and disrupt the user's health during sleep.

Moreover, putting the phone in the back pocket of your pants is also quite dangerous. Especially for forgetful and careless users. Without realizing it, the phone can get crushed while sitting down. From there, a crispy sound can be heard, indicating a cracked or shattered phone screen protector. As a result, the image display on the phone's LCD screen is not perfectly visible. 

Similarly, placing the phone on the floor or other low places like the ground also risks the phone being stepped on or crushed by heavy objects. Due to these accidental incidents, your Android or iPhone may end up crushed, causing it to break and be damaged.

If a list is made, this is why phones should not be stacked or placed on the floor.

Phones can get damaged, usually cracked due to being crushed or burdened by heavy loads.

The effects of cellular signal and internet radiation from phones while users sleep can disrupt the user's health.

The user's carelessness in charging the phone while lying down can endanger the user's safety.

In essence, the answer to the question "Why should phones not be stacked?" with heavy objects, or other items is because it can damage the smartphone and make the user unwell. If the phone is crushed while lying down or resting.