Westel was the most popular cellphone network in Hungary at the time.

Such measures are not without their shortcomings, though, like malfunctioning cellphone networks.

When cellphone networks get saturated, it can turn into a cellular tower.

Whatever the cellphone network, the variety of international handsets is growing.

The only transmission would be on the cellphone network.

Some rescuers relied on the cellphone network, which was intermittently out of commission.

You may remember how useless overworked cellphone networks were on 9/11 and during the 2003 blackout.

From there, each call was routed to the standard cellphone network for connection and billing.

The system is unlikely to replace the current cellphone network because it cannot handle as much traffic.

The cellphone network collapsed for at least 90 minutes.