High-rise buildings can be notorious for weak and unreliable cell phone signals due to factors like:

Building materials: Steel, concrete, and low-e glass can significantly weaken signals.

Distance from cell towers: Higher floors are further away from the source, leading to weaker signals.

To improve cell phone signal coverage in a high-rise building, several solutions exist, ranging from low-cost options to more comprehensive and professional solutions. Here are some options to consider:

Low-cost alternatives:

Move to a higher floor: While not always feasible, being closer to the cell tower can significantly improve signal strength.

Reposition your phone: Experiment with holding it differently, moving near windows, or walking around to find "sweet spots" with stronger signals.

Disable low-power Bluetooth and Wi-Fi: These can sometimes interfere with cellular signals, so try disabling them temporarily.

Switch to Airplane Mode and restart: This refreshes your phone's connection to the nearest cell tower.

Update your carrier's network settings: Carriers occasionally release updates to improve signal reception.

Technical solutions:

Cell phone signal booster: This amplifies the existing signal within your own space, like an apartment, here is the sucessful case :