The upgrade is intended to cater for smartphone uptake and increasing demand for mobile broadband and will enhance coverage and capacity for customers.
Ericsson will provide services including design, deployment, integration and support for the upgraded mobile broadband network as part of a three year contract, with an automatic extension for an indefinite period.
Both operators are owned by Polish media tycoon Zygmunt Solorz-Zak and signed a five year network sharing agreement in April 2012.
"Ericsson is a long-term partner of Polkomtel and we are glad to have signed this new agreement. Together we will meet our customers' expectations for high-quality interactive mobile broadband services in Poland," said Wojciech Pytel, board member of Polkomtel.
Ericsson has partnered with Polkomtel since 2002 and has provided and implemented GSM and WCDMA networks as well as microwave transmission, IP and packet core solutions for the company.
