Inclusion Criteria:  18 years of age and over, Breast Conserving Surgery is applied, Only diagnosed with breast cancer and not having metastases, Participating voluntarily in the research, Signed the informed consent form, Patients who have a smart phone on them or near them will be included in the study.  Exclusion Criteria:  Not operated after the diagnosis of breast cancer and / or surgery other than Breast Conserving Surgery, Another type of cancer other than breast cancer, Having a disability to answer questions such as dementia, Alzheimer's, hearing and vision loss, Illiterate, Do not have a smart phone and / or do not know how to use it, Patients in the terminal period will not be included in the study.