No mobile phones

☢ radioactive ☢️ radioactive ⚠ warning ☣ biohazard ⚠️ warning 🚱 non-potable water 🚫 prohibited 🚳 no bicycles 🔞 no one under eighteen ☣️ biohazard ⛔ no entry 🚸 children crossing 🚯 no littering 🚭 no smoking 🚷 no pedestrians