Mobile virtual network operator OpenCall has been using O2 about 10 months ago, and the transition has been very successful. OpenCall is the number one MVNO in the Czech Republic on the foreigners’ market segment.
Mobile virtual network operator OpenCall has been using O2 about 10 months ago, and the transition has been very successful. OpenCall is the number one MVNO in the Czech Republic on the foreigners’ market segment.
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