Many adolescents living with HIV have difficulty taking their medicine on time, which can make it less effective and affect their health. This study will test whether sending reminder text messages, combined with small rewards like school supplies, hygiene kits, or sports items, can help adolescents take their HIV medicine regularly and stay in care. Each adolescent will choose a daily habit or routine to link to their medication. We will compare two groups receiving messages and rewards to a group receiving standard care to see which approach works best. We will also ask participants about their experience with the messages and rewards. The aim is to find a simple and effective way to help adolescents living with HIV stay healthy and in care.