The last day for the TDMA cell telephones will be Tuesday, said the Instituto Costarricense de Electricidad.
There are about 8,000 customers still using the service, the company said. The Instituto Costarricense de Electricidad said it has contacted each customer to tell them the service would be terminated.
Each customers also can receive a free GSM cell telephone when they switch their service. The company said some free phones are left. With the end of the TDMA service, the institute will operate GSM and 3G lines. Both have been having trouble lately, and some TDMA customers bemoan the loss of what they consider to be a more stable service.
The TDMA service is 16 years old.