The SC+ attention control group will continue to use Simplemed with reminder functions disabled, they will be sent daily text messages or links to PDF documents or videos containing health information as attention control. The SMASK mhealth intervention group will also receive SC and have the Simplemed reminder functions turned on (blink for ½ hr when medication is due, chime additional ½ hr, then text or email after 1 hour) and receive training in use of the A&D BP monitor. They will be instructed to measure their blood pressure twice daily AM, PM) on at least every third day. Patients will be provided with and shown how to use the smart phone app and activate the app when they record their blood pressure readings.