Simplemobile wireless preloaded sim card with $40 monthly plan, ready to activate $40 plan, 30 days of unlimited talk, text and web 1 GB at 4G. Simple mobile will work on T-mobile phones and unlocked GSM phones You get the same service as a T-mobile customer. Simplemobile wireless sim card with $40 monthly plan loaded in it, ready to use need to activate the SIM at the website www.simplemobile.com