Turkcell's digital piggy bank completed its first year: Tumbara donated 25 million GB in 1 year
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Turkcell's application Tumbara, which converts the remaining GB, minutes and SMS from its users' monthly packages into points, has completed its first year.
Turkcell's application Tumbara, which converts the remaining GB, minutes and SMS from its users' monthly packages into points, has completed its first year. A reflection of Turkcell's customer-oriented solution approach... Click for more
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