This is an open-label (all people know the identity of the intervention), multi-centric (conducted in more than one center) and non-comparative study of paliperidone ER in participants with schizophrenia who have a previous history of bad adherence to the antipsychotic treatment because of insufficient efficacy and side-effects. All the eligible participants will receive a dose of paliperidone ER in range of 3 to 12 milligram (mg) orally (taken by mouth; to be swallowed) once daily for 13 weeks. Efficacy and safety will primarily be evaluated by Positive and Negative Syndromes Scale (PANSS) and Extrapyramidal Symptom Rating Scale (ESRS), respectively. Participants' safety will be monitored throughout the study.
