(Image courtesy Visible/Verizon Wireless, Graphic by The Desk)

Verizon’s prepaid phone subsidiary Visible is making an aggressive offer to T-Mobile customers who are willing to switch.

Starting this week, T-Mobile postpaid customers who bring their own device and port their phone number to Visible can score $10 off the base unlimited plan for five years, bringing the cost down to $15 per month.

To access the deal, T-Mobile customers can switch by clicking or tapping this link, then need to use the code Byebyetmo at check-out.

Marketing material reviewed by The Desk claims the discount is “for a limited time,” but the material doesn’t say how long Visible will offer the deal to T-Mobile subscribers.

Visible’s base plan includes unlimited talk, text and data on Verizon’s 4G Lte and 5G wireless network. It also includes perks like unlimited phone calls and texting to Mexico and Canada, unlimited hotspot data,...