T-Mobile goes after Verizon in latest ad campaign

[iMore.com]

T-Mobile is going on the offensive against Verizon by launching a "Never Settle" campaign that allows existing Verizon customers to try out T-Mobile's services for free.
The carrier is giving Verizon customers the ability to port their numbers to a new T-Mobile smartphone (while retaining their existing Verizon phone), which they can use free of charge for up to 14 days. After the trial, if the customers wish to stay with T-Mobile, the carrier will cover Verizon's Early Termination Fees:

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