TDS - Telephone and Data Systems Inc. 2021 Q1 - Results - Earnings Call Presentation May, 07 2021 07:03 PM Telephone and Data Systems Inc. The following slide deck was published by Telephone and Data Systems, Inc. in conjunction with their 2021 Q1 earnings call. For further details see: Telephone and Data Systems, Inc. 2021 Q1 - Results - Earnings Call Presentation