By the arrival of the channel in the phone symbol mean phone can be used while traveling. On the other hand, there are the cross-shaped symbol, a telephone. Means do not use the phone while traveling.
The aisles in a phone symbol. Meaning they can use the phone while walking. Another sign of a cross-shaped phone. Means not use the phone while walking.
The inner lanes will be the symbol telephone. Mean, can use the cell phone while walking. The one channel with the symbol cross picture phone. That means no phone calls while walking.