If you're a T-Mobile customer, there are several ways to get a new number. You don't need a new SIM card, and you don't need to buy a new phone, but you can if you want. You will not need it often, ...
The plans cost as low as $15/month, with unlimited calling and texting for all plans and access to high-speed data through T-Mobile's network ... phones that use SIM cards or eSIMs will be compatible.
Key features of this GSM world phone also include a color external display, 6MB of memory plus SD memory card slot, full e-mail support, Java, and class 10 GPRS.